1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.57:
3 * enhancement: implicit generic function warnings now specify the package
4 in which the new generic function is being created.
5 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
6 updates of CAS-able places (similar to Clojure's swap!).
7 * enhancement: run-program no longer decodes and re-encodes environment when
8 :environment argument is not provided. (lp#985904)
9 * enhancement: On SPARC, a limitation on the number of code constants
10 emittable by the compiler has been lifted, allowing certain long functions
11 to compiled and assembled which had previously been unsupported; fixes
12 cl-bench on this ISA (lp#1008996).
13 * optimization: On x86-64, code alignment of block headers is done with
14 multi-byte NOPs now instead of repetitions of the single-byte NOP.
15 * optimization: MAP-INTO is substantially faster when the target sequence is
16 of unknown type; mapping into lists is no longer O(N^2). (thanks to James
18 * optimization: the compiler no longer heap-conses to check exits in cases
19 where the exit function is dynamic extent, or when it can prove the exit
20 function cannot escape.
21 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
22 element type, and vectors that aren't SIMPLE-ARRAYs.
23 * bug fix: potential for infinite recursion during compilation of CLOS slot
24 typechecks when dependency graph had loops. (lp#1001799)
25 * bug fix: error forms reported with some program-errors were not escaped
27 * bug fix: functions from EVAL are now on more equal footing with functions
28 from COMPILE. (lp#1000783, lp#851170, lp#922408)
29 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
30 objects as its :METHOD-COMBINATION argument, not just lists designating
31 method combinations. (lp#936513)
32 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
34 * bug fix: restore build on solaris/sparc. (lp#1008506)
35 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
36 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
38 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
39 * RANDOM enhancements and bug fixes:
40 ** bug fix: the range and distribution of random integers could be
41 catastrophically wrong when the compiler derived the type of its
42 argument as a disjoint set of small integers.
43 ** bug fix: the distribution of random integers is now completely
44 uniform even when the specified limit is not a power of two.
45 (Previously some values could be about 0.1 % more probable than
46 others in the worst case.) (lp#309467)
47 ** RANDOM on large integer arguments is generally faster and conses
48 less than before; this is visible for fixnums above a length of
49 about 24 bits, but extremely so for bignums: the old implementation
50 used time and space quadratical in the size of the argument there,
51 the new one is linear.
52 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
53 main entry point, SB-EXT:QUIT is deprecated.
54 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
55 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
56 * enhancement: FASL loading no longer grabs the world-lock.
57 * enhancement: GENCGC reclaims space more aggressively when objects being
58 allocated are a large fraction of the total available heap space.
60 * enhancement: backtraces show the correct number of arguments for frames
61 called with too many arguments.
62 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
64 * enhancement: ASDF has been updated 2.21.
65 * optimization: fewer uses of full calls to signed modular functions.
67 * optimization: typechecking alien values is typically 5 x faster.
68 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
70 * bug fix: file compilation performance issues when dumping subtypes
71 of CHARACTER (lp#994487)
72 * bug fix: fixed disassembly of some SSE instructions on x86-64.
73 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
74 OPEN. (lp#969352, thanks to Kambiz Darabi)
75 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
77 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
78 classoid even if X was not the proper name of the class. (lp#941102)
79 * bug fix: declaration leakage between lexical environments due to careless
80 use of NCONC in MAKE-LEXENV. (lp#924276)
81 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
82 *default-pathname-defaults* contains NAME or TYPE components.
83 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
84 from CL package, e.g. (loop . 10).
85 * bug fix: run-program with existent or non-existent files for :output or
86 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
87 returns NIL instead of signalling an obscure error.
88 * bug fix: fix miscompilation of some logand forms with large constant
89 arguments. (lp#974406)
90 * bug fix: account for funcallable-instance objects properly in ROOM.
91 * bug fix: incorrect octets reported for c-string decoding errors.
93 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
95 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
96 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
97 allowing faster release of memory back to the OS. (lp#991293)
98 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
99 existing deadline for the dynamic scope of its body.
100 * bug fix: compiler-internal interval arithmetic needed to be more
101 conservative about open intervals when operated on by monotonic but not
102 strictly-monotonic functions. (lp#975528)
103 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
104 it's also slightly faster. (lp#998926)
105 * bug fix: better error messages for malformed declarations.
107 * bug fix: define-condition didn't return the name of the defined condition.
109 ** improved docstrings: REPLACE (lp#965592)
111 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
112 * bug fix: fix copy-structure. When copying from stack to heap, garbage
113 could end up in the heap making GC unhappy.
114 (Thanks to James Knight, lp#911027)
116 ** SBCL can now be built using Clang.
117 ** ASDF has been updated 2.20.
118 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
119 * bug fix: don't complain about a too-hairy lexical environment for inlining
120 when the function has never been requested for inlining. (lp#963530)
122 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
123 * enhancements to building SBCL using make.sh:
124 ** --fancy can be specified to enable all supported feature enhancements.
125 ** --with-<feature> and --without-<feature> can be used to specify
126 which features to build with.
127 ** --arch option can be used to specify the architecture to build for.
128 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
129 full-blows cross-compilation.)
130 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
131 which allows specifying name of the default interning package for the
133 * enhancement: when *READ-EVAL* is true, arrays with element type other than
134 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
135 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
136 null alien when malloc() fails. (lp#891268)
137 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
138 conditions can be conveniently accessed through function with the same
139 name, analogously to CONTINUE.
140 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
141 from the printer by type, causing an error marker to be printed instead.
142 (Thanks to Attila Lendvai)
143 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
144 generally behave better when errors occur during printing.
145 * enhancement: the test runner now takes a --report-skipped-tests argument
146 to report the individual tests skipped as well as the number of skipped
148 * enhancement: undefined functions now appear in backtraces as ("undefined
149 function") instead of ("bogus stack frame") on x86oids.
150 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
151 deadlock errors are reported in an easier-to-decipher manner.
152 * enhancement: DESCRIBE on type designators reports the expansion in more
154 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
155 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
156 of the :LITTLE-ENDIAN feature. (Thanks to Luís Oliveira, lp#901661)
157 * enhancement: better disassembly of segment-prefixes on x86 and other
158 instruction prefixes (e.g. LOCK) on x86 and x86-64.
159 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
160 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
161 * optimization: SUBSEQ on vectors of unknown element type is substantially
163 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
164 be stack-allocated. (lp#902351)
165 * optimization: the compiler is smarter about representation selection for
166 floating point constants used in full calls.
167 * optimization: the compiler no longer refuses to coerce large fixnums to
168 single floats inline, except on x86 where this limitation is still
170 * optimization: truncation operations on integers with constant divisor
171 arguments 1 and -1 are optimized away.
172 * bug fix: deadlock detection could report the same deadlock twice, for
173 two different threads. Now a single deadlock is reported exactly once.
174 * bug fix: interval-arithmetic division during type derivation did not
175 account for signed zeros.
176 * bug fix: compiler error when typechecking a call to a function with
177 non-constant keyword arguments.
178 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
179 * bug fix: condition slot accessors no longer cause undefined function
180 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
181 form that defines them. (lp#896379)
182 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
184 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
185 bogusly report NIL, T.
186 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
187 required arguments ignored and performed assignments to others.
189 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
190 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
191 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
192 * bug fix: redefining a function whose previous definition contained an
193 unknown type no longer causes a style-warning. (lp#806243)
194 * bug fix: undefined functions now appear in backtraces as ("undefined
195 function") instead of ("bogus stack frame") on non-x86oids.
196 * bug fix: backtraces are no longer cut off at ("undefined function") when
197 called under certain circumstances (involving a caller-allocated stack
199 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
200 systems. (regression since 1.0.53)
201 * bug fix: GC deadlocks from dladdr() on certain platforms.
202 * bug fix: broken standard streams no longer automatically cause recursive
203 errors on debugger entry.
204 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
205 (regression since 1.0.53)
206 * bug fix: attempts to stack allocate a required argument to a function with
207 an external entry point caused compiler-errors.
208 * bug fix: compiler notes for failed stack allocation for a function argument
209 no longer claim to be unable to stack allocate the function.
210 * bug fix: COERCE now signals a type-error on several coercions to
211 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
212 * bug fix: missing failure-to-stack-allocate compiler notes for some
213 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
214 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
216 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
218 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
219 * minor incompatible changes:
220 ** RENAME-FILE on a symbolic links used to rename the linked-to file
222 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
223 directory, but now signal an error instead. Use TRUENAME to resolve the
224 pathname if you wish to delete the linked directory, and DELETE-FILE if
225 you wish to delete the
226 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
227 symbols associated with it will trigger a compile-time warning.
228 * thread-related enhancements:
229 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
230 Many thanks to generous donors!)
231 ** Threading is now more reliable on non-Linux platforms. We still don't
232 consider threads on non-Linux platforms good enough to enable them by
233 default, but they're in a clearly better shape now.
234 ** Deadlines supported now on all platforms.
235 ** All blocking functions in the threading API now have a :TIMEOUT
237 ** Semaphore notification objects have been added to SB-THREAD.
238 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
239 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
240 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
241 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
242 using an API anologous to defining new SETFable places.
243 * GC-related enhancements and bug fixes:
244 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
245 and Gb suffixes. Default is megabytes as before.
246 ** on GENCGC targets, the default dynamic space size is now 512Mb for
247 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
248 exception, defaulting to mere 444Mb to fit under default ulimits.) The
249 new defaults are in place to prevent hitting swap on low-end systems.
250 Use build-time option --dynamic-space-size to build an SBCL with
251 another default, or the runtime option to adjust the size at startup: a
252 good size is at most equal to the amount of physical memory the system
254 ** on GENCGC targets, nursery and generation sizes now default to 5% of
256 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
257 refuses to create SIMPLE-FUN objects.
258 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
260 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
261 validation of pointer objects as GENCGC does, instead of a
262 comparatively weak bounds-check against the heap spaces.
263 * SB-BSD-SOCKETS bug fixes:
264 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
265 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
266 systems with getaddrinfo().
267 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
268 safe outside systems with getaddrinfo().
269 * enhancement: ASDF has been updated 2.019.
270 * enhancement: special-case TCO prevention for functions which never return
271 extended to untrusted types, keeping one more frame's worth of debug
272 information around in many cases.
273 * enhancement: debug-names of anonymous and local function are more
274 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
275 * enhancement: on win32, ABS of complex floats guards better against
276 overflows. (lp#888410)
277 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
278 process exiting with code 1. (lp#676987)
279 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
280 the system where on the filesystem the SBCL sources themselves are
281 located. (Thanks to Zach Beane)
282 * enhancement: the compiler is now able to derive tighter bounds for
283 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
284 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
285 correctly, even on wide-fixnum builds. (lp#887220)
286 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
287 resolved to directories.
288 * bug fix: type mismatch when assigning to lexical variables no longer
289 result in fasl-dumping internal type objects. (lp#890750)
290 * bug fix: type mismatch on (SETF AREF) and function return values no
291 longer result in fasl-dumping internal type objects.
292 * bug fix: With several combinations of argument types, for example (EXPT
293 <integer> <(complex double)>), EXPT now uses double-precision throughout
294 instead of partially calculating only to single-precision. (lp#741564;
295 thanks to Lutz Euler)
296 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
297 objects when interrupted by GC on PPC.
299 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
300 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
301 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
302 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
303 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
304 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
305 targets is now 63 bits (up from 61).
306 * enhancement: DESCRIBE now reports a lambda-list and source location
307 for complext setf-expanders.
308 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
309 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
310 of multiple-valued places to be set to NIL, instead of signalling an
311 error (per a careful reading of CLHS 5.1.2.3).
312 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
313 * bug fix: repair crash in x86oid darwin signal handling emulation
314 when built with certain compilers.
315 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
316 rotation arguments on x86-64. (lp#882151)
317 * bug fix: low-level control flow optimisations could result in bogus
318 code in functions with tail and non-tail calls to local functions on
320 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
321 to emit literal characters > (code-char 4095), for comparisons with
323 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
324 on 64 bit platforms. (lp#881445)
325 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
326 delete the wrong file when using relative pathnames. (lp#882877)
327 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
328 sequences and :KEY NIL.
330 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
331 * enhancement: ASDF has been updated to version 2.017.
332 * enhancement: the --core command line option now accepts binaries with
334 * enhancement: when built with :sb-core-compression, core files (regular
335 or executable) can be compressed with zlib. Use the :COMPRESSION
336 argument to SAVE-LISP-AND-DIE to specify a compression level.
337 * enhancement: --[no-]merge-core-pages determines whether the runtime
338 hints the operating system that identical core pages between SBCL
339 processes should share the same physical memory. Default is to only
340 enable this for compressed cores.
341 * optimization: SLEEP no longer conses.
342 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
343 or bit-vectors when using the standard pretty-print dispatch table.
344 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
346 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
347 AREF, CHAR, etc. (lp#826971)
348 * bug fix: compiler-errors causes by integer arguments with composed of
349 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
350 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
351 expressions. (lp#770184)
352 * bug fix: complex single float literals are correctly aligned when used
353 as arguments of arithmetic operators.
354 * bug fix: on 32-bit platforms, rounding of double floats larger than a
355 fixnum is correct. (reported by Peter Keller)
356 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
357 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
359 * bug fix: redefining classes such that slots with custom allocation are
360 added or removed works again.
362 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
363 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
364 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
365 MAKE-SOCKET-STREAM if using SERVE-EVENT.
366 * enhancement: added support for socket keepalive timeout intervals
367 and probe counts on Linux.
368 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
369 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
370 * enhancement: added new toplevel options --quit and --non-interactive
372 * enhancement: the Windows port of SBCL now builds and runs on Wine
373 (thanks to Anton Kovalenko).
374 * enhancement: more, and more correct, SSE instruction definitions on
375 x86-64 (thanks to Alexander Gavrilov).
376 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
377 to help the processor execute spin loops, when applicable. Currently
378 implemented for x86 and x86-64.
379 * optimization: unsigned integer divisions by a constant are implemented
380 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
381 * optimization: improved type-derivation for LOAD-TIME-VALUE.
382 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
383 instructions. (lp#814688)
384 * bug fix: COERCE to unfinalized extended sequence classes now works.
385 (reported by Jan Moringen; lp#815155)
386 * bug fix: a compiler error during typecheck generation, reported by Eric
388 * bug fix: obsolete instance protocol fires when shared slots are added
390 * bug fix: fixed-format floating point printing with scaling factors.
392 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
393 backtraces. (lp#818460)
394 * bug fix: better backtraces for interrupted syscall frames on x86.
396 * bug fix: SSE comparison instructions can be disassembled even when one
397 operand is in memory. (lp#814702)
398 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
399 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
400 type information associated with the VALUES form.
401 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
403 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
404 first write (lp#561642).
405 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
406 * bug fix: bound propagation involving conversion of large bignums to
407 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
409 * bug fix: &REST to &MORE conversion still works in unsafe call to known
410 functions; reported by Lutz Euler (lp#826459).
411 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
414 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
415 * enhancement: errors from FD handlers now provide a restart to remove
416 the offending handler.
417 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
419 * enhancement: location of user or system initialization file can now easily
420 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
421 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
422 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
423 the thunk, as a keyword argument, :arguments.
424 * enhancement: constraint propagation is simplified (and sped up) when
425 COMPILATION-SPEED > SPEED.
426 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
427 * enhancement: debugger understands &MORE arguments better.
428 * optimization: extracting bits of a single-float on x86-64 has been
429 optimized. (lp#555201)
430 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
431 when (> SPEED SPACE).
432 * optimization: local call trampolines (x86 and x86-64) are emitted
434 * optimization: implicit value cells for dynamic-extent closed-over bindings
435 on x86 and x86-64 can hold unboxed values as well.
436 * meta-optimization: improved compilation speed, especially for large
437 functions. (lp#792363 and lp#394206)
438 * bug fix: bound derivation for floating point operations is now more
439 careful about rounding possibly closing open bounds. (lp#793771)
440 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
441 backwards incompatible change in 1.0.48.27)
442 * bug fix: occasional debugger errors in when a type-error occured in a
443 function with dynamic-extent &rest list.
444 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
445 boa-construtors can be used to initialized structure slots.
446 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
447 (lp#795705, regression)
448 * bug fix: DIRECTORY works better on logical pathnames.
449 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
450 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
451 * bug fix: the compiler no longer constant-folds NaNs in
452 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
453 * bug fix: FORMAT now handles floating point rounding correct, eg.
454 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
456 * bug fix: style warning during lambda-list introspection of generic
457 functions with both optional and key argments.
458 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
460 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
463 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
464 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
465 interrupts for its body.
466 * enhancement: source locations are now available for files loaded as
467 source, compile-time-too evaluation, and initialization files.
468 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
469 virtual source-file information, eg. overriding input-file of COMPILE-FILE
470 when a temporary file is used for compilation.
471 * enhancement: ASDF has been updated to version 2.015.3.
472 * enhancement: backtraces involving frames from the default evaluator are
474 * enhancement: RUN-PROGRAM works with user-defined binary input and output
476 * enhancement: more informative compile-time warnings and runtime errors for
477 type-errors detected at compile-time.
478 * enhancement: deadlock detection for mutexes and spinlocks.
479 * enhancement: dynamic-extent for &rest lists stack allocate only their
480 spines, not their argumets. While portable code should not rely on this,
481 particularly in combination with inlining, it should make dynamic-extent
482 easier to use safely.
483 * enhancement: SB-POSIX improvements:
484 ** WNOHANG and WUNTRACED are exported.
485 ** SYSCALL-ERROR now also provides the name of the failing system call.
486 * enhancement: --script improvements:
487 ** errors on standard input, output, and error streams are handled and
488 cause scripts to exit silently, making them easier to use in shell
490 ** backtraces from scripts now go to standard error instead of the
491 terminal even if one is available.
492 ** --script can be an argument, causing the script to be loaded from
494 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
495 strings to foreign memory.
496 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
497 a file, making it easier to understand heap dynamics.
498 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
499 allows the compiler to automatically elide rest-list allocation so long as
500 the call sites are in functions that the compiler knows cannot escape.
502 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
503 especially in safe code when none of the required arguments have changed
505 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
506 uninterruptible, as well as blocking reads from socket streams created
507 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
508 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
509 from the to-char if the from-char is not a dispatch-macro character.
510 * bug fix: references to undefined variables in function calls that are
511 optimized away now signal a runtime error. (lp#722734)
512 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
513 types from a function defined in the same file. (regression from
515 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
517 * bug fix: spurious errors during QUIT when standard streams were closed.
519 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
520 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
521 years, is now no longer supported.
522 * enhancement: read() and write() have been added to SB-POSIX.
523 * enhancement: types of DEFSTRUCT constructors are proclaimed more
524 accurately, allowing better typechecking of call-sites.
525 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
526 are no longer caught. (reverted to pre 1.0.34 behaviour)
527 * optimization: slightly faster ISQRT. (lp#713343)
528 * bug fix: better support for Solaris /bin/sh in sh-based tests.
529 * bug fix: TRACE behaves better when attempting to trace undefined
530 functions. (lp#740717)
531 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
532 to (FUNCALL #'(LAMBDA ...) ...).
533 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
534 a compile-time error. (lp#720382)
535 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
537 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
538 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
539 optimization. (regression from 1.0.45.18/1.0.46.15)
540 * bug fix: package locks did not protects against compile-time side-effects
541 of DEFUN. (lp#675584)
542 * bug fix: --dynamic-space-size argument is validated more carefully.
544 * bug fix: memory fault from printing a malformed simple-condition.
546 * bug fix: redefining classes so that slot-definition classes change now
547 engages the obsolete instance protocol. (lp#766271)
548 * bug fix: constant improper lists could break source coverage recording.
550 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
553 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
554 * bug fix: fix mach port rights leaks in mach exception handling code on
555 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
557 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
558 * enhancement: redefinition warnings for macros from different files. (lp#434657)
559 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
560 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
561 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
562 processed using EVAL -- now the appropriate toplevel form is reported instead.
563 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
564 declarations. (lp#726331)
565 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
566 that NIL/NULL is excluded from the type.
567 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
569 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
571 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
572 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
573 stack-allocated values out of their dynamic-extent. (lp#310175)
574 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
575 x86-64 builds caused a type-error.
576 * bug fix: calling COMPILE with something else than a lambda-expression as the
577 second argument reports a more sensible error. (lp#718905)
578 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
579 are detected. (lp#520607)
580 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
582 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
583 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
584 methods. (regression from 1.0.45.18)
585 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
586 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
587 * bug fix: several foreign functions accepting string also accepted NIL and
588 consequently caused a memory fault at 0 now signal a type-error instead.
590 * bug fix: under rare circumstances, constraint propagation could rewrite a
591 variable reference to refer to a variable not in scope, causing an error
592 during physical environment analysis when attempting to close over the
593 variable. (lp#551227)
594 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
596 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
597 * enhancement: largefile support on Solaris.
598 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
599 arguments (lp#710017)
600 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
601 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
603 * optimization: ERROR and CERROR are approximately 5 times faster.
604 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
605 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
606 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
607 up instance creation in those cases.
608 * optimization: arithmetic operations with multiple constant arguments in now
609 have them reduced at compile-time. (lp#676414)
610 * optimization: determining current character position on string-streams for
611 pretty-printing was overly slow.
612 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
613 lifetime analysis to overwrite closed-over variables (lp#681092).
614 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
615 were not handled correctly (lp#713063).
616 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
618 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
619 mistake. (lp#667297).
620 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
621 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
622 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
623 unintern the wrong symbol with the same name. (lp#693796)
624 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
625 making it possible to restore the initial table if it has been messed up.
628 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
629 * enhancement: ~/ and ~user/ are treated specially in pathnames.
630 Refer to documentation for details.
631 * enhancement: ASDF has been updated to version 2.010.
632 * optimization: mutated closed-over variables that are only accessed by
633 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
634 declared to be DYNAMIC-EXTENT) are stored directly in their containing
635 stack frame, rather than allocating a VALUE-CELL (lp#586103).
636 * optimization: UNWIND-PROTECT cleanup functions are now declared
638 * bug fix: backtracing function with &REST arguments now shows the full
639 argument list. (lp#310173)
640 * bug fix: return types for functions with complex lambda-lists are now
641 derived properly (lp#384892)
642 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
643 long string arguments slowed the compiler down to a crawl.
644 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
645 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
646 in the DEFMETHOD body.
647 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
648 messages, being instead replaced with the corresponding function name.
649 * bug fix: don't derive overly complex unions of numeric types for arithmetic
650 operators. (lp#309448)
652 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
653 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
654 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
655 * enhancement: ALLOCATION-INFORMATION also provides the page the object
657 * enhancement: default dynamic-space size can be configured at build-time
658 without touching source, using the --dynamic-space-size argument to make.sh.
659 * enhancement: DESCRIBE recognizes symbols naming optimization policy
660 qualities, and mentions ALWAYS-BOUND declarations.
661 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
663 * enhancement: ASDF has been updated to 2.009.
664 * enhancement: the system detects known type-erros in calls better,
665 signalling a full warning about violated proclaimed FTYPEs and violations
666 of derived FTYPEs within the same file, including self-calls.
667 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
668 * optimization: constant-folding exploits numeric and character types, in
669 addition member types.
670 * optimization: numeric, character and member types that are inhabited by
671 exactly one value are tested with EQL.
672 * optimization: more conditional branches are eliminated during IR1.
673 Branches are simplified before performing if/if-conversion, and simple
674 equivalent branches (that only read the same constant or variable) are
676 * improvements to the Windows port:
677 ** change: canonical unparsing form for pathname namestrings now uses / as
678 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
679 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
680 on Windows. (thanks to Kalyanov Dmitry)
681 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
683 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
684 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
685 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
686 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
688 * bug fix: interrupts arriving during CL:OPEN caused an error.
689 * bug fix: overeager character buffering could cause input to block
690 spuriously when reading from a pipe (lp#643686)
691 * bug fix: more efficient timer expiry should avoid starvation on systems
692 where number of SIGALRMs per second is restricted. (lp#375515)
693 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
694 * bug fix: compile-times no longer scale linearly with the size of
695 quoted lists in source-code. (lp#654289)
696 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
697 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
698 so badly. (lp#654485)
699 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
700 an error for eg. STRUCTURE. (lp#458015)
701 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
702 (lp#613871, thanks to Roman Marynchak)
703 * bug fix: more reliable &REST list type derivation. (lp#655203)
704 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
705 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
706 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
707 also declared NOTINLINE. (lp#655581)
708 * bug fix: the compiler could attempt to emit constant left shifts of
709 greater value than n-word-bits. (lp#309063)
710 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
711 type information for the function being set. (lp#659220)
712 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
713 containing self-calls were recompiled with a new signature, and failed
714 to warn when a self-call using the old signature was left in. (lp#655126)
715 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
716 :DEFAULT when the default external had character size other than 8 bits.
718 * bug fix: derived types of functions in the same file were implicitly
719 trusted, leading to potential heap corruption when those function were
720 defined incompatibly. (lp#657499)
721 * bug fix: existing ASDF source registries are ignored when building
723 * bug fix: short-form DEFSETF checks that the second argument is a symbol
724 (lp#655824, thanks to Roman Marynchak)
725 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
726 package-lock violation was detected. (lp#660752)
727 * bug fix: the system can store different docstrings for a single function
728 under different names. (lp#661631, regression from 1.0.29.24)
729 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
730 properly. (lp#384801)
731 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
732 of specified length could confuse the type derivation in unsafe code.
734 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
735 fork with multiple Lisp threads running is made on every platform,
736 not just Darwin. (lp#451111)
737 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
738 around when core was saved, which could cause undefined behaviour when the
740 * bug fix: Allow UNTRACE of functions that are no longer defined
741 (lp#667657, thanks to Attila Lendvai)
742 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
743 compile-time warning (lp#664373, thanks to Stas Boukarev)
745 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
746 * incompatible change: FD-STREAMS no longer participate in the serve-event
747 event-loop by default. (lp#316072)
748 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
749 affects streams from CL:OPEN.
750 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
751 default, but this is liable to change: applications needing serve-event
752 for socket streams should explicitly request it using :SERVE-EVENTS T
754 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
756 * enhancement: CLOS effective method functions and defclass slot typechecking
757 function now have debug names for use in backtraces and profiles.
758 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
760 * enhancement: symbols are printed using fully qualified names in several
761 error and warning messages which are often associated with package
762 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
763 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
764 thanks to Andrew Golding)
765 * bug fix: reading /proc files on Linux works. (lp#425199)
766 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
768 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
769 breaking code that tried to write the value of a printer control variable.
770 (lp#581564, thanks to Stas Boukarev)
771 * bug fix: WRITE compiler macro did not handle output stream designators
772 correctly. (lp#598374, thanks to Stas Boukarev)
773 * bug fix: better availability of names of foreign functions in backtraces
774 on Linux. (lp#626962, thanks to Stas Boukarev)
775 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
776 lp#627581, thanks to Josh Elsasser and Jim Wise)
777 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
778 thanks to Josh Elsasser)
779 * bug fix: using aliases for builtin classes as defmethod specializers
780 without adding DEFTYPEs for them works. (lp#618387)
781 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
783 * bug fix: legally dynamic-extent lists and vectors used as
784 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
785 * bug fix: inline-expansion creating references to dead lambda-variables
786 (lp#454681, thanks to Alexey Dejneka)
787 * bug fix: better error message for bogus numerical arguments to RANDOM.
788 (lp#598986, thanks to Stas Boukarev)
789 * bug fix: the compiler occasionally inlined references from incompatible
790 environments occurs. (lp#308951)
791 * bug fix: the compiler threw an error when trying to compile a local
792 function (labels or flet) known to take a specialized complex argument.
793 (not in launchpad, reported by sykopomp in #lispgames)
794 * bug fix: package-locks failed to protect against compile-time effects of
795 DEFUN when the symbol previously had a macro definition. (lp#576637)
796 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
797 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
798 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
799 * bug fix: evaluation in debugger REPL works using the global context when
800 in frames that do not have sufficient debug information.
801 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
803 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
805 * bug fix: interrupt taking longer than the requested period caused SLEEP
806 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
808 changes in sbcl-1.0.42 relative to sbcl-1.0.41
810 ** Cross-compilation host is now specified to make.sh using
811 command-line argument --xc-host=<command> instead of a positional
812 argument. (thanks to Daniel Herring)
813 ** Install location can be specified to make.sh using command-line
814 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
815 * optimization: The default implementation of
816 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
817 * enhancement: Explicit memory barrier operations are now available for use
818 by multithreaded code. See documentation for details.
819 * enhancement: Experimental support for threading on Linux/PPC.
820 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
821 * bug fix: EXPT signals an error if first argument is a zero and second
822 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
823 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
824 (lp#576594, thanks to Roman Marynchak)
825 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
826 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
828 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
829 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
830 cached, leading to many fewer expensive calls to
831 COMPUTE-APPLICABLE-METHODS.
832 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
833 CLASS argument, search for and call an appropriate optimized ctor function
835 * bug fix: WRITE always returns the correct value.
837 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
838 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
839 * bug fix: Name conflicts between symbols passed as arguments to a single
840 call to IMPORT no longer add multiple symbols with the same name to the
841 package (detectable via DO-SYMBOLS).
842 * bug fix: support building without the dlshim on darwin x86 and x86-64
844 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
846 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
847 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
849 * bug fix: linkage-table entries on PPC now no longer overflow their
850 space allocation (potentially causing crashes if they are written out
852 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
853 platforms, preventing the GC from seeing stale pointers on the control
854 stack in subsequent GCs (which would, and does, break invariants).
855 * bug fix: 32-bit unicode external formats now work on big-endian systems.
856 * bug fix: Literal characters with code points greater than about 32767
857 now work on PPC UNICODE builds.
858 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
859 high order bits are explicitly cleared out. In some contrived situations,
860 this could lead to wrong results in mixed real/complex float arithmetic.
861 * bug fix: Fix function/macro redefinition warnings when building with
862 clisp. (lp#576787, thanks to Josh Elsasser)
863 * new platform: experimental support for ppc/openbsd (thanks to Josh
865 * bug fix: Floating-point traps now work on ppc/linux.
867 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
868 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
869 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
870 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
871 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
872 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
873 SB-THREAD:GRAB-MUTEX.
874 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
875 contain additional data structures and tools for concurrent programming;
876 at the moment it contains a lock-free queue, and a lock-free mailbox
878 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
879 GET-MUTEX but takes &key rather than &optional parameters. Also added
880 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
882 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
883 SB-THREAD:WAIT-ON-SEMAPHORE.
884 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
886 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
887 conditions to defer the deadline for forever.
888 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
890 * enhancement: errors from NO-APPLICABLE-METHOD and
891 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
892 generic function call.
893 * enhancement: SB-BSD-SOCKET improvements
894 ** sockets and socket streams now have a more informative printed
895 representation based on the corresponding SOCKET-NAME and
897 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
899 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
900 CL:CLOSE when appropriate, and no longer disassociates the stream
901 from the socket if close failed. (lp#543951)
902 * improvements to the instrumenting profiler
903 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
904 ** optimization: counters no longer use locks for the overflow mode.
905 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
906 incurred an off-by-one miscount.
907 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
908 * enhancement: improved DEFMETHOD pretty-printing.
909 * enhancement: perform range reduction when arguments are too large for
910 x87's transcendentals (instead of returning 0). (lp#327192)
911 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
912 some of CL-PPCRE's macros. (lp#570079)
913 * enhancement: our machine code is slightly less hostile to valgrind on
915 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
916 to Robert Swindells and Aleksej Saushev)
917 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
918 * bug fix: a rare case of startup-time page table corruption.
919 * bug fix: a semaphore with multiple waiters and some of them unwinding due
920 to timeouts could be left in an inconsistent state.
921 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
922 * bug fix: misoptimization of multiplication by one in
923 (SB-C::FLOAT-ACCURACY 0) policies.
924 * bug fix: miscounts in SB-PROFILE.
925 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
926 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
927 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
928 up itself" (March 2010) for further details.
929 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
930 against length of the list if the element is found before the specified
931 END is reached. (thanks to Alec Berryman, lp#554385)
932 * bug fix: errors signalled during package graph modification no longer
933 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
934 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
935 :SB-DOC feature. (lp#552564)
936 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
937 * bug fix: more robust runtime executable path detection. (lp#375549)
938 * bug fix: GCD always returns positive values. (lp#413680)
939 * bug fix: Converting division to multiplication by reciprocal handles
941 * bug fix: We were too eager in eliding range reduction tests on x87.
942 The maximal magnitude is 2^63, not 2^64.
943 * bug fix: Transforms for TRUNCATE don't die when the result is completely
945 * bug fix: Maybe restore buildability on Alpha.
946 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
948 * bug fix: RANDOM-STATE can be printed readably again.
949 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
950 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
951 types) could result in type mismatches during compilation.
953 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
954 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
955 stack frame thrown from.
956 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
957 compiler optimization qualities inside dynamic extent of its body.
958 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
959 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
961 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
962 constraint propgation, allowing better compilation eg. when used to
963 access structures with WITH-SLOTS. (lp#520366)
964 * optimization: the compiler is now more aware of the type of the underlying
965 storage vector for multidimensional simple arrays resulting in better code
966 for accessing such arrays.
967 * optimization: passing NIL as the environment argument to TYPEP no longer
968 inhibits optimizing it. (lp#309788)
969 * optimization: more efficient register usage when handling single-float
970 arguments on x86-64. (thanks to Lutz Euler)
971 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
972 pre-allocated temporary vectors. (lp#496249)
973 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
974 in :INITIAL-CONTENTS. (lp#523612)
975 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
976 functions. (lp#524707)
977 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
978 WITH-SLOTS usages during compilation.
979 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
980 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
981 all x86oid platforms with :UD2-BREAKPOINTS target feature.
982 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
983 instruction (tested on x86oid linux with ud2-breakpoints).
984 * bug fix: slam.sh now works on win32.
985 * bug fix: better differences of numeric types. (lp#309124)
986 * bug fix: arrays declared intersection and union types can have their
987 upgraded element type derived. (lp#316078)
988 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
989 threads started during profiling. (lp#472499)
990 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
992 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
993 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
994 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
995 values instead of signaling an error. (lp#309093)
996 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
998 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
999 declarations (lp#497321)
1000 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1001 and failed to detect circular lists (lp#452008)
1002 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1004 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1005 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1006 due to it, so that handlers can run.
1007 * bug fix: reparsing undefined types if they have become defined since
1008 parsing. (lp#309128)
1009 * bug fix: missing &REST type in a proclamation for a function with both
1010 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1011 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1012 expanded calls (lp#542174)
1013 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1014 than just at toplevel form.
1016 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1017 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1018 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1019 but work on type specifiers.
1020 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1021 to name a type specifier.
1022 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1023 specifier is valid where "valid" basically means "would be accepted as
1024 second argument of TYPEP".
1025 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1026 returns the function's declared, or derived FTYPE.
1027 * new feature: SB-POSIX now supports accessing the d_ino member of
1028 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1029 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1030 provide for seeding a RANDOM-STATE object with user-provided data or
1031 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1032 attempt to initialize the returned state from the operating system's
1033 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1034 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1035 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1036 * bug fix: Fix grammar and style issues for the docstrings of
1037 printer-related variables and functions. (Thanks to mon_key; launchpad
1039 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1041 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1042 in a row even though a handler defered the deadline long into the
1044 * bug fix: A deadline handler was run without interrupts enabled for a
1045 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1046 in infinitely spinning, non-killable threads.
1047 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1048 before reaching the erring stack frame.
1049 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1050 real power. (launchpad bug lp#525949)
1051 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1052 GENCGC platforms. (launchpad bug lp#529014)
1053 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1054 (launchpad bug lp#525916)
1055 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1056 (Thanks to Robert Goldman)
1058 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1059 * optimization: ROUND with a single single-float or double-float argument
1060 is properly inlined when possible.
1061 * optimization: Slightly better code is generated for integer<->float
1062 conversions and for single-float<->double-float conversions on x86-64.
1063 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1064 code for 32-bit and 64-bit rotations on x86-64.
1065 * bug fix: The install script changes the ownership of directories as well
1066 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1067 launchpad bug lp#508485)
1068 * bug fix: TRUNCATE with a single single-float or double-float argument is
1069 properly inlined when possible. (launchpad bug lp#489388)
1070 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1071 no longer causes a compiler error on x86 and ppc.
1072 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1073 always relative to *READTABLE* rather than the passed argument.
1075 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1076 * minor incompatible change: threading support is now enabled by default
1078 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1080 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1081 are now caught and reported just like errors during macroexpansion.
1082 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1083 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1084 * enhancement: ASDF systems can now depends on SB-QUEUE.
1085 * fixes and improvements related to Unicode and external formats:
1086 ** bug fix: error handling and restart usage in the ucs-2 external format
1088 ** there is now an implementation of the ucs-4 external format.
1089 ** the utf-16 and utf-32 external formats are supported.
1090 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1091 in the environment. setenv() and unsetenv() are also provided. (reported by
1092 Fare Rideau; launchpad bug lp#460455)
1093 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1094 loading. This ensures sensible errors for .FASL files from other
1095 implementations on case-insensitive filesystems. (reported by Willem
1096 Broekema; launchpad bug lp#489417)
1097 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1098 Willem Broekema; launchpad bug lp#489698).
1099 * bug fix: some minor code rearrangements to reenable warning-free building
1100 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1101 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1103 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1106 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1107 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1108 * improvement: support O_LARGEFILE access to files larger than 2GB on
1109 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1110 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1111 definitions for methods specializing on the passed class itself.
1112 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1113 definitions for methods specializing on the passed class itself, or on
1115 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1116 about itself during the build (e.g. for M-? in Slime), if this flag is
1117 enabled in customize-target-features.lisp. This will increase the core
1118 size by about 5-6mb, though, so it's mostly interesting to SBCL
1120 * new feature: various GENCGC tuning parameters have been experimentally
1121 documented and exported from SB-EXT. See documentation for details.
1122 * fixes and improvements related to Unicode and external formats:
1123 ** the Unicode character database has been upgraded to the
1124 Unicode 5.2 standard, giving names and properties to a number of new
1125 characters, and providing a few extra characters with case
1127 ** improvement: restarts for providing replacement input/output on coding
1128 errors for fd-stream external formats.
1129 ** improvement: where :<encoding> is a keyword corresponding to an
1130 external format the system supports, it is now possible to specify
1131 (:<encoding> :replacement <character>) as an external format which will
1132 automatically substitute <character> on encoding or decoding errors for
1133 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1135 ** improvement: the file streams underlying the standard streams (such as
1136 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1137 which uses the replacement mechanism to handle encoding errors,
1138 preventing various infinite error chains and unrecoverable I/O
1140 ** minor incompatible change: the utf-8 external format now correctly
1141 refuses to encode Lisp characters in the surrogate range (char-codes
1142 between #xd800 and #xdfff).
1143 ** fix a typo preventing conversion of strings into octet vectors
1144 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1146 ** fix a bug in the octet multibyte handling of decoding errors and the
1147 USE-VALUE restart. (launchpad bug lp#314939)
1148 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1149 restart on fd-stream decoding errors.
1150 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1151 error is near the end of file.
1152 ** fix a double-error case in unibyte octet conversions, when the first
1153 use of USE-VALUE is ignored.
1154 ** fix bugs in handling of undefined code points in unibyte encodings.
1155 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1156 streams after an UNREAD-CHAR.
1157 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1158 object is allocated in a boxed region of dynamic space.
1159 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1160 fork with multiple Lisp threads running is made, instead of going
1161 ahead with unpredictable consequences. (reported by Leslie Polzer)
1162 * bug fix: uses of slot accessors on specialized method parameters within
1163 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1164 error while finalizing the class. This fix may cause classes with slot
1165 accessors to be finalized later than previously. (reported by Lars Rune
1166 Nøstdal; launchpad bug lp#473699)
1167 * bug fix: restore buildability on the MIPS platform. (regression from
1168 1.0.30.38, reported by Samium Gromoff)
1169 * bug fix: inspecting closures is less likely to fail with a type error.
1170 * bug fix: no timer starvation when setting the system clock back.
1171 (launchpad bug lp#460283)
1172 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1173 standard pprint dispatch table as specified by CLHS.
1174 * bug fix: give CLISP a hint about a type declaration to enable it to build
1175 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1177 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1178 (reported by Attila Lendvai; launchpad bug lp#310132)
1179 * bug fix: distinguish in type specifiers between arrays that might be
1180 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1181 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1182 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1183 * bug fix: setting the value of a symbol-macro within a method in the
1184 presence of type declarations works properly again. (reported by Iban
1185 Hatchondo; launchpad bug lp#485019)
1187 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1188 * optimization: faster FIND and POSITION on strings of unknown element type
1189 in high SPEED policies. (thanks to Karol Swietlicki)
1190 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1192 * improvement: better error signalling for bogus parameter specializer names
1193 in DEFMETHOD forms (reported by Pluijzer)
1194 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1196 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1198 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1199 removes previous default initargs (reported by Lars Rune Nøstdal and
1201 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1202 lambda-lists. (reported by Peter Seibel)
1203 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1204 correctly when starting from an executable core without saved runtime
1205 options (reported by Faré Rideau, thanks to Zach Beane)
1206 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1207 an optimization note instead. (reported by Martin Cracauer)
1208 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1209 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1210 new process group if it doesn't need to share stdin with the sbcl
1211 process. (thanks to Leslie Polzer)
1212 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1213 (reported by Stanislaw Halik)
1215 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1216 * improvement: stack allocation is should now be possible in all nested
1217 inlining cases: failure to stack allocate when equivalent code is manually
1218 open coded is now considered a bug.
1219 * improvements related to Unicode:
1220 ** the Unicode character database has been upgraded to the
1221 Unicode 5.1 standard, giving names and properties to a number of new
1222 characters, and providing a few extra characters with case
1224 ** the system now recognizes and produces names for Unicode Hangul
1225 syllable characters.
1226 ** the EBCDIC-US external-format is now supported for octet operations
1227 (as well as for stream operations).
1228 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1229 be used to output toplevel compile-time effects into a separate .CFASL
1231 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1232 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1234 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1236 * optimization: division of floating point numbers by constants uses
1237 multiplication by reciprocal when an exact reciprocal exists.
1238 * optimization: multiplication of single- and double-floats floats by
1239 constant two has been optimized.
1240 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1241 sufficient type information is available. (thanks to Leslie Polzer)
1242 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1243 known structure objects are as efficient as defstruct generated accessors.
1244 * optimization: unused vector creation can now be optimized away.
1245 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1246 * improvement: a STYLE-WARNING is signalled when a generic function
1247 clobbers an earlier FTYPE proclamation.
1248 * improvement: the compiler is able to track the effective type of
1249 generic function across method addition and removal even in the
1250 absence of an explicit DEFGENERIC.
1251 * improvement: DESCRIBE now reports on symbols naming undefined
1252 but assumed or declared function as well.
1253 * improvement: recompilation of systems using SB-GROVEL now works
1254 (thanks to Leslie Polzer)
1255 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1256 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1258 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1259 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1260 well as user defined declaration names.
1261 ** VARIABLE-INFORMATION is now aware of alien variables.
1262 * improvement: improved address space layout on OpenBSD (thanks to Josh
1264 * improvement: pretty-printing of various Lisp forms has been improved
1265 (thanks to Tobias Rittweiler)
1266 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1267 unused were deleted in safe code. (reported by John Fremlin)
1268 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1270 * bug fix: some out-of-line array predicates were missing (reported by
1272 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1274 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1275 (thanks to Larry D'Anna)
1276 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1277 as well. (reported by Josh Elsasser)
1278 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1279 leading to possible attempts to delete the same file twice. See docstring
1280 on DELETE-FILE for details. (reported by John Fremlin)
1281 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1282 designator argument, rather than its truename. (reported by Luis
1284 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1285 information about some array types. (thanks to Luis Oliveira)
1286 * bug fix: moderately complex combinations of inline expansions could
1287 be miscompiled if the result was declared to be dynamic extent.
1288 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1289 form (+ <variable> <integer>) were miscompiled under certain
1291 * bug fix: in some cases no compiler note about failure to stack allocate
1292 was emitted, even if the objects were in fact heap allocated.
1293 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1294 allocation could cause objects users might reasonably expect to
1295 be heap allocated to be stack allocated.
1296 * bug fix: DESCRIBE signalled an error for generic functions under
1297 certain circumstances. (thanks to Leslie Polzer)
1298 * bug fix: Fixed spelling of an error message.
1300 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1301 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1302 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1303 of SB-THREAD:THREAD-ERROR-THREAD.
1304 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1305 * new feature: docstrings for local and anonymous functions are no longer
1306 discarded. (thanks to Leslie Polzer)
1307 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1308 values in other threads.
1309 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1310 about object allocation.
1311 * optimization: division of a real float by a complex float is implemented
1312 with a specialised code sequence.
1313 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1314 keywords is an order of magnitude faster.
1315 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1316 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1317 methods, and similarly for non-standard metaclass classes as long as there
1318 are no methods additional on MAKE-INSTANCE.
1319 * optimization: more efficient type-checks for FIXNUMs when the value
1320 is known to be a signed word on x86 and x86-64.
1321 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1322 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1324 * optimization: compiler is smarter about delegating argument type checks to
1326 * optimization: several character functions are now compiled somewhat more
1327 efficiently. (reported by Lynn Quam)
1328 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1329 * improvement: less unsafe constant folding in floating point arithmetic,
1330 especially for mixed complex/real -float operations.
1331 * optimization: constant double and single floats are stored in native
1332 unboxed format on x86[-64].
1333 * optimization: smarter code for arithmetic operations with constant floats,
1334 complex floats, or integers on x86[-64].
1335 * optimization: smarter code for conjugate/multiplication of float complexes
1336 and abs/negate of floats on x86-64.
1337 * optimization: more efficient complex float and real float operations on
1339 * improvement: complex float division is slightly more stable.
1340 * improvement: DESCRIBE output has been reworked to be easier to read and
1341 contains more pertinent information.
1342 * improvement: failure to provide requested stack allocation compiler notes
1343 provided in all cases (requested stack allocation not happening without a
1344 note being issued is now considered a bug.)
1345 * bug fix: SB-POSIX exports the documented types and functions
1346 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1347 types. (reported by "abhi")
1348 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1349 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1350 (thanks to Paul Khuong)
1351 * bug fix: looping around HANDLER-CASE could silently consume stack space
1352 on each iteration. (reported by "foobar")
1353 * bug fix: better error signalling when calls to functions seeking elements
1354 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1355 (reported by Tobias Rittweiler)
1356 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1357 directory components now works as it used to. (various prolems reported by
1358 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1359 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1360 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1361 * bug fix: bogus undefined variable warnings from fopcompiled references to
1362 global variables. (thanks to Lars Rune Nøstdal)
1363 * bug fix: foreign function names should now appear in backtraces on
1364 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1365 * bug fix: SETF compiler macro documentation strings are not discarded
1367 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1368 (thanks to Alex Plotnick)
1369 * bug fix: SLEEP accepts large integer arguments, truncating them to
1370 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1371 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1372 * bug fix: compiler notes for expensive slot type checks could be emitted
1373 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1375 changes in sbcl-1.0.29 relative to 1.0.28:
1376 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1377 https://bugs.launchpad.net/sbcl
1378 Bugs can be reported directly there, or by sending email to
1379 sbcl-bugs@lists.sourceforge.net
1380 (no subscription required.)
1381 * minor incompatible change: under weak type checking policy integer
1382 types are weakened less aggressively.
1383 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1384 allowed to return, which causes SBCL to quit with exit status 0. Previously
1385 if the function returned with a small integer return value, that value
1386 was accidentally reused as the exit status.
1387 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1388 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1389 :HASH-FUNCTION argument. Refer to user manual for details.
1390 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1392 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1393 microseconds since the Unix epoch on all platforms.
1394 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1395 allows the compiler to safely elide boundedness checks for special
1397 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1398 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1399 efficiency measure for threaded platforms, but also valueable in
1401 * new feature: UNC pathnames are now understood by the system on Windows.
1402 * optimization: the compiler uses a specialized version of FILL when the
1403 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1405 * optimization: accesses to potentially non-simple arrays where element type
1406 is known are 50% faster.
1407 * optimization: compiler now generates faster array typechecking code.
1408 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1410 * optimization: multidimensional array accesses in the absence of type
1411 information regarding array rank are approximately 10% faster due to
1412 open coding of ARRAY-RANK.
1413 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1414 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1416 * optimization: result of call to VECTOR can now be stack allocated.
1417 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1418 as long as the resulting array is one-dimensional and has a known
1419 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1420 length of the list matches the known length of the vector does not
1421 allocate the list as an intermediate step. Ditto for VECTOR and simple
1423 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1424 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1425 known element type, and is known to be simple and one dimensional.
1426 * improvement: SBCL now emits a compiler note where stack allocation was
1427 requested but could not be provided (not in all cases, unfortunately)
1428 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1429 * improvement: pretty-printing loop has been implemented properly. (thanks
1430 to Tobias Rittweiler)
1431 * documentation: CLOS slot typechecing policy has been documented.
1432 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1433 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1434 pointer, leading to memory faults. (thanks to Bart Botta)
1435 * bug fix: better floating point exception handling on x86/OpenBSD.
1436 (thanks to Josh Elsasser)
1437 * bug fix: exit status from QUIT when called under --script was lost
1438 (reported by Hubert Kauker)
1439 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1440 same implementation of FILL to initialize the array, even if a more
1441 efficient one was available (reported by Stas Boukarev, thanks to
1443 * bug fix: potential miscompilation of array stack allocation on x86 and
1444 x86-64. (reported by Time Tossavainen)
1445 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1446 result in their subforms being treated as top level forms. (reported by
1448 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1449 than a machine register could leave garbage in the high bits of the
1450 result register (bug 316325).
1451 * bug fix: disable address space randomization Linux/x86-64 as well,
1452 not just x86-64. (reported by Ken Olum)
1453 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1454 generate incorrect code.
1455 * bug fix: #201; type inference for CONS and ARRAY types could derive
1456 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1457 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1458 could not be assigned to or bound with PROGV. (reported by Lorenz
1460 * bug fix: the value of CL:- in the inspector was the previous expression
1461 evaluated rather than the expression being evaluated.
1462 * bug fix: constants can no longer be locally declared special.
1463 * bug fix: signals delivered to threads started from foreign land (read:
1464 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1465 thread by blocking all signals and resignalling.
1466 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1467 from :INITFORM, if any.
1469 changes in sbcl-1.0.28 relative to 1.0.27:
1470 * a number of bugs in cross-compilation have been fixed, with the ultimate
1471 result that building under (at least) clisp should be much more reliable.
1472 * minor incompatible changes: echo-streams now propagate unread-char to the
1473 underlying input stream, and no longer permit unreading more than one
1475 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1476 frames, allowing for instance more reliable backtraces.
1477 * improvement: the debugger REPL can now reference lexical variables
1478 by name directly for code compiled with (DEBUG 3).
1479 * improvement: errors from malformed declarations now have better source
1480 paths associated with them. (thanks to Tobias Rittweiler)
1481 * optimization: faster local calls on x86/x86-64
1482 * bug fix: some error messages for out-of-bound array indexes confused the
1483 index and the bound. (thanks to Stas Boukarev)
1484 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1486 * bug fix: running regressions tests in shells without OSTYPE set now works.
1487 (reported by Harald Hanche-Olsen)
1488 * bug fix: more robust static space exhaustion signalling from
1489 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1490 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1491 docstring away instead of storing it under names such as (LAMBDA (X)).
1492 (reported by Leslie Polzer)
1493 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1494 (thanks to Ole Arndt for the patch)
1495 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1496 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1497 potentially-invalid effective methods in its cache.
1498 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1499 instances as well (thanks to Paul Khuong)
1500 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1501 SB-POSIX:WAITPID and their C equivalents.
1502 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1504 changes in sbcl-1.0.27 relative to 1.0.26:
1505 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1506 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1507 * improvement: the system either recovers from stack exhaustion or dies
1508 properly as opposed to leaving the user uncertain of whether the handler
1509 trampled on some random memory next to the stack or having to rely on
1510 --lose-on-corruption (which is still a good idea to use in production
1511 because stack exhaustion can happen in signal handlers which will likely
1513 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1514 1.0.25.37, reported by Harald Hanche-Olsen)
1515 * bug fix: work around signal delivery bug in darwin (regression from
1516 1.0.25.44, reported by Sidney Markowitz)
1517 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1519 changes in sbcl-1.0.26 relative to 1.0.25:
1520 * incompatible change: an interruption (be it a function passed to
1521 INTERRUPT-THREAD or a timer function) runs in an environment where
1522 interrupts can be enabled. The interruption can use
1523 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1524 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1525 potentially running out of stack. Keep in mind that in the absence
1526 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1527 acquiring a lock can enable interrupts.
1528 * incompatible change: GC-OFF and GC-ON are removed, as they were
1529 always unsafe. Use WITHOUT-GCING instead.
1530 * new feature: runtime option --disable-ldb
1531 * new feature: runtime option --lose-on-corruption to die at the
1532 slightest hint of possibly non-recoverable errors: running out of
1533 memory, stack, alien stack, binding stack, encountering a memory
1534 fault, etc. In the absence of --lose-on-corruption a warning is
1536 * enhancement: detect binding stack exhaustion
1537 * enhancement: detect alien stack exhaustion on x86/x86-64
1538 * improvement: generally more stable and reliable interrupt handling
1539 * improvement: there is a per thread interruption queue,
1540 interruptions are executed in order of arrival
1541 * improvement: a repeating timer reschedules itself when the it has
1542 finished, but expiration times are spaced equally. If an
1543 expiration time is in the past it will trigger after a short grace
1544 period that may give a chance to other things to run.
1545 * optimization: slightly faster gc on multithreaded builds
1546 * optimization: faster WITHOUT-GCING
1547 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1548 important locks so that the debugger/handler doesn't produce
1549 recursive errors or deadlock.
1550 * bug fix: real-time signals are not used anymore, so no more
1551 hanging when the system wide real-time signal queue gets full.
1552 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1554 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1555 * bug fix: fix random memory faults related to interrupts on alpha
1556 * bug fix: fix random memory faults related to interrupts on sparc
1557 * bug fix: fix deadlocks related to starting threads
1558 * bug fix: fix deadlines on locks on futex platforms
1559 * bug fix: restore errno in signal handlers
1560 * bug fix: fix deadlocks related to hash tables
1561 * bug fix: fix deadlocks in pcl
1563 changes in sbcl-1.0.25 relative to 1.0.24:
1564 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1565 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1566 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1567 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1568 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1569 better name and does not return values so stale on multiprocessor systems.
1570 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1572 * improvement: unithread builds keep track of MUTEX-VALUE.
1573 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1574 stream anymore making it thread safe to have a concurrent reader and
1575 a writer, for instance, in a pipe.
1576 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1577 arguments, making compiler-macros for SETF-functions able to inspect
1578 their constant arguments.
1579 * improvement: COMPILE-FILE reports times with millisecond accuracy
1580 (thanks to Luis Oliveira)
1581 * optimization: CHAR-CODE type derivation has been improved, making
1582 TYPEP elimination on subtypes of CHARACTER work better. (reported
1583 by Tobias Rittweiler, patch by Paul Khuong)
1584 * bug fix: setting alien structure fields of type struct by value now
1585 computes the right offset for the memory copy.
1586 * bug fix: compilation problem involving inlined calls to aliens with
1587 result type VOID. (reported by Ken Olum)
1588 * bug fix: #235a; sequential inline expasion in different policies no
1589 longer reuses the functional from the previous expansion site.
1590 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1591 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1592 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1593 cause an implied type redefinition. Regression from 1.0.21.29.
1594 * bug fix: sign-extension of small signed return values now works with C
1595 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1596 * improvements to the Windows port:
1597 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1598 Westfold, thanks to Rudi Schlatte)
1600 changes in sbcl-1.0.24 relative to 1.0.23:
1601 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1602 vector of a multidimensional SIMPLE-ARRAY.
1603 * new feature: the system now signals a continuable error if standard
1604 readtable modification is attempted. (thanks to Tobias Rittweiler)
1605 * new feature: DIRECTORY has been extended with a non-standard keyword
1606 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1607 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1608 has been robustified and documented better. (thanks to Robert Goldman)
1609 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1610 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1611 * tradeoff: constant FORMAT control strings are now compiled unless
1612 SPACE > SPEED (previously only when SPEED > SPACE.)
1613 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1615 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1617 * bug fix: lexical type declarations are now correctly reported by
1618 SB-CLTL2. (reported by Larry D'Anna)
1619 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1620 using UTF-8 as external format. (thanks to Luis Oliveira)
1621 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1622 are signalled correctly. (thanks to Stas Boukarev)
1623 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1624 designator. (thanks to Tobias Rittweiler)
1625 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1626 designator, and returns T instead of the function. (thanks to
1628 * bug fix: direct superclasses of STANDARD-CLASS and
1629 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1630 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1631 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1632 when no class with the named slot yet exists no longer causes a
1633 compile-time style-warning.
1634 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1635 in safe code. (reported by Didier Verna)
1636 * bug fix: #430; nested structure constructors can stack allocate.
1637 * bug fix: on some 64-bit platforms dynamic space size was truncated
1638 to #xffff0000 bytes. (reported by Benjamin Lambert)
1639 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1640 REPL unusable. (reported by Daniel Herring)
1641 * bug fix: return values of READ-SEQUENCE did not take :START into
1642 account on file streams, regressions since 1.0.12.22. (reported by
1643 Thomas Russ, patch by Paul Khuong)
1644 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1645 method specializer used to confuse permuation vector optimization.
1646 * bug fix: system inserted bogus implicit type declarations for local
1647 special variables in DEFMETHOD bodies.
1648 * bug fix: #354; duplicated frames in backtraces due to
1649 non-tail-call-optimized XEPs to functions with return type NIL
1651 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1652 initializes structure object slots according to DEFSTRUCT initforms,
1653 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1654 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1655 (reported by Bruno Haible and Stephen Wilson)
1656 * bug fix: #395; fill-pointer output streams used now support
1657 element-type BASE-CHAR as well.
1658 * bug fix: compiler error when attempting to derive return value of
1659 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1661 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1663 * bug fix: Mac OS X binaries should now be portable between Leopard
1666 changes in sbcl-1.0.23 relative to 1.0.22:
1667 * enhancement: when disassembling method functions, disassembly
1668 for the associated fast function is also produced.
1669 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1671 * optimization: printing with *PRINT-PRETTY* true is now more
1672 efficient as long as the object being printed doesn't require
1673 special handling by the pretty printer.
1674 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1675 now interact correctly with type declarations.
1676 * partial bug fix: PCL detects infinite recursion during wrapper
1677 validation. (thanks to Attila Lendvai)
1678 * bug fix: #426; nested function calls are inlined properly.
1679 Previously if FOO was an inline function, in calls of the form
1680 (FOO (FOO ...)) the outer call was not inlined.
1681 * bug fix: long long arguments passed in registers to alien
1682 functions on PowerPC Linux and NetBSD are now handled correctly
1683 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1685 changes in sbcl-1.0.22 relative to 1.0.21:
1686 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1687 for the shared object in the current directory, but passes the native
1688 namestring of the designated pathname to the operation system's shared
1689 object loading function as-it.
1690 * minor incompatible change: --disable-debugger toplevel option now takes
1691 effect before processing of initialization files and --eval or --load
1693 * new feature: new commandline argument: --script, which supports
1694 shebang lines. See documentation for details. (based on work by
1696 * new feature: SAVE-LISP-AND-DIE can save current values of
1697 --dynamic-space-size and --control-stack-size in the executable core,
1698 causing it to skip normal runtime option processing. See documentation
1699 for details. (thanks to Zach Beane)
1700 * enhancement: inoccous calls to EVAL or generic functions dispatching
1701 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1702 * enhancement: the system no longer resignals errors from --load and
1703 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1704 associated with the original error to be lost. (thanks to Ariel
1706 * enhancement: :DONT-SAVE keyword argument has been added to
1707 LOAD-SHARED-OBJECT for controlling interaction with
1708 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1709 the effects of an earlier LOAD-SHARED-OBJECT call.
1710 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1711 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1712 provided. (reported by Cedric St-Jean)
1713 * bug fix: circularity handling in the reader did not treat raw
1714 structure slots correctly. (reported by Cedric St-Jean)
1715 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1716 file descriptors when there were none.
1717 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1718 was broken. (reporteed by Willem Broekema)
1719 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1720 pathnames without a directory.
1721 * bug fix: COMPILE-FILE did not warn about undefined variable
1722 references at toplevel, and LOAD of the resulting fasl did
1723 not signal an error.
1724 * bug fix: functions with non-required arguments used to end up with
1725 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1726 * bug fix: redefining a function with non-required arguments didn't
1727 update the system's knowledge about its call signature properly.
1728 * bug fix: fixed #431; incompatible alien record type redefinitions
1729 are detected and handled. (reported by Neil Haven)
1730 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1731 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1733 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1734 after alien stack frames.
1735 * bug fix: strings passed to mk{s,d}temp lacked null termination
1737 changes in sbcl-1.0.21 relative to 1.0.20:
1738 * new feature: the compiler is able to track the effective type of a
1739 generic function across method addition and removal.
1740 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1741 appropriately typed structure slots without locking.
1742 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1743 information like those gathered by TIME using a programming-friendly
1745 * new feature: TIME reports time taken even if the form performs a
1746 non-local transfer of control.
1747 * enhancement: reduced conservativism on GENCGC platforms: on
1748 average 45% less pages pinned (measured from SBCL self build).
1749 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1750 mutate constant symbols or violate declaimed type of the symbol.
1751 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1752 sleeping on the semaphore in heavily contested semaphores.
1753 * bug fix: semaphores and condition variables were not interrupt
1755 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1756 owned by other threads anymore.
1757 * bug fix: FIND on lists called KEY outside the specified
1758 subsequence. (reported by budden)
1759 * bug fix: LOG doesn't use single-float intermediate results when
1760 given mixed integer and double-float arguments, leading to better
1761 precision. (reported by Bob Felts)
1762 * bug fix: LOG with base zero returned values of inconsistent type.
1764 changes in sbcl-1.0.20 relative to 1.0.19:
1765 * minor incompatible change: OPTIMIZE qualities
1766 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1767 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1768 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1769 * documentation: some slot access efficiency guidelines have been
1770 added to the user manual.
1771 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1772 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1773 as ASSOC and MEMEBER.
1774 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1775 to more efficient EQ-comparison versions more often.
1776 * optimization: enhanced derivation of DOLIST iteration variable type
1778 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1780 * optimization: runtime lookup of function definitions can be
1781 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1782 * optimization: compiler is able to derive the return type of
1783 (AREF (THE STRING X) Y) as being CHARACTER.
1784 * optimization: CLRHASH on empty hash-tables no longer does pointless
1785 work. (thanks to Alec Berryman)
1786 * optimization: REPLACE deftransforms don't punt when :START1 or
1788 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1789 no longer emits a code deletion note. (reported by Andrew
1791 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1792 functions with an odd number of &OPTIONAL arguments, a &REST
1793 argument, and one or more &KEY arguments at the call site.
1794 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1795 arguments appeared at call sites as well.
1796 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1797 READ-LINE &co can no longer read from them afterwards. (reported
1799 * bug fix: fixed #427: unused local aliens no longer cause compiler
1800 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1802 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1803 alien-stack leakage. (reported by Andy Hefner)
1804 * bug fix: PROGV signals an error when an attempt to violate declared
1805 type of a variable or bind a constant is made.
1806 * bug fix: SET signals an error when an attempt to violate declared
1807 type of a variable is made.
1808 * bug fix: restart computation during the execution of a restart
1809 test function no longer causes infinite recursion. (reported by
1811 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1812 signals an error. (thanks to Pierre Mai)
1813 * bug fix: EXPORT left symbol unexported in conflict situations.
1814 (thanks to Michael Weber)
1815 * bug fix: correctly handle name conflicts involving CL:NIL.
1816 (thanks to Michael Weber)
1817 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1818 conflicts arising from USEing package with conflicting symbols
1819 correctly. (thanks to Michael Weber)
1821 changes in sbcl-1.0.19 relative to 1.0.18:
1822 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1823 warnings that go otherwise unhandled will be muffled if they are
1824 of the type that's the value of this variable.
1825 * optimization: stack allocation is slightly more efficient on x86
1827 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1828 where a raw slot always is initialized using the initform whose
1829 type is not know sufficiently well a compile-time are now compiled
1830 correctly. (reported by John Morrison)
1831 * bug fix: compiler no longer makes erronous assumptions in the
1832 presence of non-foldable SATISFIES types.
1833 * bug fix: stack analysis missed cleanups of dynamic-extent
1834 arguments in non-let-converted calls to local functions.
1835 * improvements to the Windows port:
1836 ** adjusted address spaces for building on both Win32 and
1837 Win64. (thanks for John Connors)
1838 * fixed some bugs revealed by Paul Dietz' test suite:
1839 ** interval arithmetic during type derivation used inexact integer
1840 to single-float coercions.
1841 ** arithmetic operations involving large integers and single
1842 floats give the same results in compiled and interpreted code.
1843 ** deriving the result type of COERCE no longer signals an error
1844 if the derived type of the second argument is a MEMBER type
1845 containing invalid type specifiers.
1846 ** ADJOIN with constant NIL as second argument works correctly.
1847 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1849 changes in sbcl-1.0.18 relative to 1.0.17:
1850 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1851 profiles only the current thread.
1852 * minor incompatible change: changes to SYMBOL-VALUE of constants
1853 defined with DEFCONSTANT now signal an error.
1854 * enhancement: SB-SPROF now has support for wallclock profiling,
1855 and is also able to profile specific threads. REPORT output
1856 has also additional sorting options.
1857 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1859 * optimization: structure allocation has been improved
1860 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1861 ** out of line constructors are ~10% faster.
1862 ** inline constructors are ~15% faster.
1863 ** inline constructors are capable of dynamic extent allocation
1864 (generally on x86 and x86-64, in some cases on other platforms
1866 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1868 * optimization: file compiler is now able to coalesce non-circular
1869 lists, non-base strings, and bit-vectors. Additionally, constants
1870 are never referenced through SYMBOL-VALUE at runtime.
1871 * optimization: code defining methods on PRINT-OBJECT (and other
1872 generic functions in the COMMON-LISP package) now loads faster.
1873 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1875 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1876 fasl is now deleted. (reported by Attila Lendvai)
1877 * bug fix: READ-LINE always returned NIL for the last line in files.
1878 (reported by Yoshinori Tahara)
1879 * bug fix: more accurate disassembly annotations of foreign function
1880 calls. (thanks to Andy Hefner)
1881 * bug fix: trimming non-simple strings and non-string string
1882 designators when the there is nothing to trim works properly.
1883 (thanks to James Knight)
1884 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1885 (thanks to Travis Cross)
1886 * fixed some bugs revealed by Paul Dietz' test suite:
1887 ** NIL is a valid function name (regression at 1.0.13.38)
1888 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1889 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1890 fill pointers properly (regression at 1.0.12.23)
1891 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1892 displacement indices properly (regression at 1.0.12.23)
1894 changes in sbcl-1.0.17 relative to 1.0.16:
1895 * temporary regression: user code can no longer allocate closure
1896 variable storage on stack, due to bug 419 without explicitly
1897 requesting it. Please consult sbcl-devel for advice if you need to
1898 use this feature in the meanwhile.
1899 * new feature: runtime argument --control-stack-size can be used to
1900 adjust thread default control stack size.
1901 * enhancement: improved TIME output
1902 ** all times are reported using the measured accuracy (milliseconds
1903 for real and GC times, microseconds for everything else.)
1904 ** processor cycle counts on x86 and x86-64.
1905 ** interpreted forms are counted for both evaluator modes.
1906 ** number of lambdas converted by the compiler is reported.
1907 ** CPU percentage report (computed from real and total run time.)
1908 ** more comprehensive run time reporting, using a condenced format
1909 ** interperted form, lambda, and page fault counts are omitted
1911 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1913 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1914 * optimization: two argument forms of LAST are upto ~10% faster
1915 in normal SPEED policies.
1916 * optimization: NCONC no longer needs to heap cons its &REST list
1917 in normal SPEED policies.
1918 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1919 to Sidney Markowitz)
1920 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1921 regression since 1.0.9.1. (thanks to Eric Marsden)
1922 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1923 since 1.0.15.36. (thanks to Paul Khuong)
1924 * bug fix: LAST when always returned the whole list when given a bignum
1925 as the second argument.
1926 * bug fix: dynamic extent allocation of nested lists and vectors
1927 could leak to otherwise accessible parts.
1928 * bug fix: invalid optimization of heap-allocated alien variable
1930 * bug fix: fasl header checking is less vulnerable to different
1931 platform word lengths.
1932 * bug fix: more correct assembler syntax for GNU binutils
1933 2.18.50.0.4 support. (thanks to Marijn Schouten)
1934 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1936 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1937 declarations) successfully. (reported by Attila Lendvai)
1939 changes in sbcl-1.0.16 relative to 1.0.15:
1940 * minor incompatible change: revert the changes to sb-posix's error
1941 signaling added in 1.0.14.
1942 * minor incompatible change: change PROBE-FILE back to returning
1943 NIL whenever we can't get a truename, as was the case before 1.0.14.
1944 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1945 inherits from ERROR instead of just CONDITION.
1946 * new feature: SB-INTROSPECT can provide source locations for instances
1947 as well. (thanks to Tobias Rittweiler)
1948 * optimization: binding special variables now generates smaller code
1949 on threaded platforms.
1950 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1951 and cases where no :TEST is given but the compiler can infer that
1952 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1953 * optimization: better LOGNOT on fixnums.
1954 * optimization: modular arithmetic for a particular requested width
1955 is implemented using a tagged representation unless a better
1956 representation is available.
1957 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1958 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1959 for wellformedness and returns a specialized vector. (reported by
1960 Francois-Rene Rideau)
1961 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1962 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1963 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1964 unscheduling timer at the same time as another timer fires.
1965 * bug fix: don't reschedule timers for dead threads.
1966 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1967 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1968 bogus errors if select() was interrupted.
1969 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1971 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1972 * enhancement: cleaner backtraces for interactive interrupts, as
1973 well as other cases where the interesting frames used to be
1974 obscured by interrupt handling frames.
1975 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1976 now supported, and tracing a whole package using (TRACE "FOO") now
1977 traces SETF-functions as well.
1978 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1979 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1980 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1981 * unreadably printed representation of hash-tables now includes
1983 * bug fix: partially fixed #188: type propagation from assignments
1984 is now more efficient.
1985 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1986 'DOUBLE-FLOAT) are not flushable.
1987 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1988 full address of the object, and none of the tag bits.
1989 * bug fix: readably printing hash-tables now respects other printer
1990 control variables. (reported by Cedric St-Jean)
1991 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1992 keyword with MAKE-HASH-TABLE.
1993 * bug fix: export SB-POSIX:MKSTEMP.
1994 * bug fix: SORT was not interrupt safe.
1995 * bug fix: XREF accounts for the last node of each basic-block as
1997 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1998 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1999 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2000 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2001 create obsolete instances in the case of redefinition or
2002 obsoletion of a superclass. (thanks to Andy Hefner)
2003 * bug fix: Support for the Alpha architecture has been revived; it had
2004 suffered somewhat from lack of maintenance since sbcl-1.0.
2005 * improvements to the Windows port:
2006 ** The system detects the codepage to use at startup, instead of
2007 using the value from the saved core. (thanks to Kei Suzuki)
2009 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2010 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2011 (see documentation for details.)
2012 * revived support for OpenBSD (contributed by Josh Elsasser)
2013 * partially fixed bug #108: ROOM no longer suffers from occasional
2014 (AVER (SAP= CURRENT END)) failures.
2015 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2016 bodies no longer cause a WARNING to be signalled. (reported by
2018 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2019 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2020 the bug in TRUNCATE.) (reported by Michael Weber)
2021 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2022 no samples. (reported by Andy Hefner)
2023 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2024 no longer appear as (NIL ...) frames in backtraces.
2025 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2026 is now actually exported from SB-EXT as documented. (reported by
2028 * bug fix: sb-aclrepl now correctly understands how to inspect
2029 single-floats on 64-bit platforms where single-floats are not boxed.
2030 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2031 yet been finalized. (reported by Levente Meszaros)
2032 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2033 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2034 SBCL-specific optimize qualities.
2036 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2037 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2038 an executable in the search path, and does so in the child
2039 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2040 been removed; it can be found in the CVS history, for somebody who
2041 needs that search behavior (see the manual).
2042 * minor incompatible change: compiler policy re. weakening type
2043 checks has changed: now type checks are weakened only if SAFETY < 2
2045 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2046 unparsing of directory pathnames as files. Analogously,
2047 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2048 filename to parse into a directory pathname.
2049 * enhancement: implicit generic function creation now signals a
2050 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2051 users can bind handlers for and muffle around calls to LOAD.
2052 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2053 to be used (using the default stream external format), and allows
2054 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2055 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2056 strings and vectors whose element-type or simplicity is not fully
2057 known at compile-time.
2058 * optimization: STRING-TRIM and related functions no longer allocate
2059 a new string when no trimming needs to be performed. These functions
2060 are also faster than before when the input string has been declared
2062 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2063 * optimization: READ-LINE is significantly faster for files containing
2065 * optimization: non-open coded uses of character comparison operators
2066 (e.g. char=) no longer cons when called with more than one parameter
2067 on platforms supporting dynamic-extent allocation.
2068 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2069 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2070 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2072 * bug fix: some sequence functions elided bounds checking when
2074 * bug fix: too liberal weakening of union-type checks when SPEED >
2076 * bug fix: more bogus fixnum declarations in ROOM implementation
2079 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2080 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2081 :SYNCHRONIZED argument, which makes the hash-table safe for
2082 concurrent accesses (but not iteration.) See also:
2083 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2084 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2085 * optimization: CONCATENATE on strings is an order of magnitude faster
2086 in code compiled with (> SPEED SPACE).
2087 * optimization: SUBSEQ is ~50% faster on lists.
2088 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2089 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2090 END is smaller then START.
2091 * bug fix: SB-PROFILE will no longer report extra consing for nested
2092 calls to profiled functions.
2093 * bug fix: ROOM implementation had bogus fixnum declarations which
2094 could cause type-errors when calling ROOM on large images.
2095 * bug fix: if file compilation is aborted, the partial fasl is now
2096 deleted, and COMPILE-FILE returns NIL as the primary value.
2097 * bug fix: number of thread safety issues relating to SBCL's internal
2098 hash-table usage have been fixed.
2099 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2100 be returned from its body when the values were being returned
2101 using unknown-values return convection and the W-P-O was wrapped
2102 inside an UNWIND-PROTECT.
2103 * bug fix: sb-posix should now compile again under Windows, enabling
2104 slime to work again.
2106 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2107 * incompatible change: hash-table accessor functions are no longer
2108 automatically protected by locks. Concurrent accesses on the same hash-table
2109 from multiple threads can give inconsistent results or even corrupt the
2110 hash-table completely. Multi-threaded applications should do their own
2111 locking at the correct granularity. In the current implementation it is
2112 still safe to have multiple readers access the same table, but it's not
2113 guaranteed that this property will be maintained in future releases.
2114 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2115 and will signal an error at runtime.
2116 * enhancement: SB-THREAD package now exports a semaphore interface.
2117 * enhancement: CONS can now stack-allocate on x86 and
2118 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2120 * enhancement: nested lists can now be stack allocated on
2121 platforms providing stack allocation support.
2122 * enhancement: dynamic-extent support has been extended to support
2123 cases where there are multiple possible sources for the stack
2125 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2126 if the mutex is uncontested on Linux.
2127 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2128 as specified by the CLHS. (thanks to Tobias Rittweiler)
2129 * bug fix: NaN comparison now works on x86-64.
2130 * bug fix: CLOSE :ABORT T on a stream with pending output now
2132 * bug fix: instances of non-standard metaclasses using standard
2133 instance structure protocol sometimes missed the slot type checks
2135 * bug fix: known functions can be inlined in high-debug code.
2137 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2138 * minor incompatible change: the MSI installer on Windows no longer
2139 associates .lisp and .fasl files with the installed SBCL.
2140 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2141 on Windows. (thanks to Luis Oliviera)
2142 * new feature: SB-CLTL2 contrib module now implements
2143 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2144 * optimization: scavenging weak pointers is now more efficient,
2145 requiring O(1) instead of O(N) per weak pointer to identify
2146 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2147 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2148 method bodies using constant slot-names when the first argument is
2149 a specializer parameter for the method.
2150 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2151 names, when the class of the instance is a direct instance
2152 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2153 as slow as the constant slot-name case.)
2154 * optimization: member type construction is now O(N) instead
2156 * optimization: UNION and NUNION are now O(N+M) for large
2157 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2159 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2160 now more readable in environments like Slime which display it.
2161 (thanks to Tobias C. Rittweiler)
2162 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2163 was able to infer the correct argument type for the object on which
2164 the CAS operation was being performed.
2165 * bug fix: copy propagation interfered with parallel assignment
2166 semantics in local calls. (reported by Paul Khuong)
2167 * bug fix: the signed modular fixnum shift compiled to wrong code on
2168 x86 and x86-64. (spotted by a slight modification to some of
2171 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2172 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2173 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2174 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2176 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2177 and generic function now print the object identity for anonymous
2178 instances. (thanks to Attila Lendvai)
2179 * enhancement: as an extension to MOP, SBCL now supports SETF of
2180 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2181 (thanks to Attila Lendvai)
2182 * enhancement: sb-cover has an alternate annotation mode which puts
2183 the form annotations at the car of the form, instead of annotating
2184 it completely. The benefit of this mode is that it shows better
2185 which forms were instrumented by the compiler.
2186 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2187 by printer control variables. (reported by Dan Corkill)
2188 * bug fix: system leaked memory when delayed output was performed by
2189 the OS in smaller chunks then expected. (thanks to David Smith)
2190 * bug fix: system leaked memory when file streams were not closed
2192 * bug fix: large objects written to slow streams that were modified
2193 after the write could end up with the modified state written to
2194 the underlying file descriptor.
2195 * bug fix: multiple threads operating in parallel on the same stream
2196 could cause buffer-overflows.
2197 * bug fix: source location information is stored correctly
2198 (broken since 1.0.6). This bug would generally show up as the
2199 Slime debugger highlighting the wrong form when the sldb-show-source
2201 * bug fix: Branch forms are again annotated as branches in the sb-cover
2203 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2204 on x86-64. (reported by Gregory Vanuxem)
2205 * bug fix: EQUALP could return wrong results for structures with raw
2206 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2207 word). (reported by Vjacheslav Fyodorov)
2208 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2211 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2212 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2213 atomic compare-and-swap operations on threaded platforms.
2214 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2215 allows assigning a global minimum value to optimization qualities
2216 (overriding proclamations and declarations).
2217 * enhancement: closed over variables can be stack-allocated on x86
2219 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2221 * optimization: slot definition lookup is now O(1). This speeds up
2222 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2223 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2224 * optimization: ASSOC and MEMBER can now be open-coded for all
2225 combinations of keyword arguments when second argument is constant
2226 and SPEED >= SPACE. In other cases a specialized version is
2228 * bug fix: using obsoleted structure instances with TYPEP and
2229 generic functions now signals a sensible error.
2230 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2231 (reported by Kristoffer Kvello)
2232 * bug fix: backtrace construction is now more careful when making
2233 lisp-objects from pointers on the stack, to avoid creating bogus
2234 objects that can be seen by the GC.
2235 * bug fix: defaulting of values in contexts expecting more than 7
2236 variables now works on x86-64. (reported by Christopher Laux)
2237 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2239 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2240 as the property-list of a symbol.
2241 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2242 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2243 situations requested, are once again file-compileable. (reported
2246 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2247 * MOP improvement: support for user-defined subclasses of
2248 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2249 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2250 the expansion of DEFMETHOD, is responsible for generating a form
2251 which creates a list of specializers when evaluated. Additional
2252 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2253 debugging and introspective support.
2254 * minor incompatible change: the (unsupported) spinlock interface
2255 has changed: free spinlock now has the value NIL, and a held spinlock
2256 has the owning thread as its value.
2257 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2258 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2260 * enhancement: name of a socket-stream is now "a socket" instead of
2261 "a constant string".
2262 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2263 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2264 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2265 for generic functions. (Thanks to Tobias C. Rittweiler)
2266 * optimization: bignum printing speed has been improved by 20-40%
2267 (depending on the bignum size.)
2268 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2270 * bug fix: the cache used by the CLOS to store precomputed effective
2271 methods, slot offsets, and constant return values is now thread and
2273 * bug fix: generic function dispatch function updating is now thread
2274 and interrupt safe (in the sense that the known issues have been
2276 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2277 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2278 * bug fix: asdf systems with dependencies to the SB-POSIX or
2279 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2280 * bug fix: interrupt safety of applicable method computation has been
2283 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2284 * new contrib: sb-cover, an experimental code coverage tool, is included
2285 as a contrib module.
2286 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2287 significantly faster.
2288 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2289 produce more efficient code on x86-64 if the compiler can determine
2290 that (+ INDEX <constant>) does not require a bounds check and FOO
2291 has an element type at least 8 bits wide.
2292 * enhancement: a new, experimental synchronous timeout facility is
2293 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2294 * enhancement: when a symbol name conflict error arises, the
2295 conflicting symbols are always printed with a package prefix.
2296 (thanks to Kevin Reid)
2297 * enhancement: stepping is now once again supported on the SPARC and
2298 MIPS platforms. (It is also now more likely to work on CheneyGC
2300 * enhancement: sb-sprof can now also track and report accurate call
2302 * bug fixes: the treatment of non-standard subclasses of
2303 SB-MOP:SPECIALIZER is more correct.
2304 * incompatible change: PURIFY no longer copies the data from the
2305 dynamic space into the static and read-only spaces on platforms
2306 that use the generational garbage collector
2307 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2309 * bug fix: GC race condition occasionally resulting in crashes with
2310 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2312 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2314 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2315 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2316 * bug fix: an asynchronous interrupt could previously leave the
2317 system running with GC inhibited.
2318 * bug fix: a DECLARE form evaluated at top-level now causes an error
2319 rather than silently (or verbosely) returning NIL.
2320 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2321 result in a error being signalled due to source form lookup errors.
2322 (reported by Peter Graves)
2324 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2325 * incompatible change: removed writer methods for host-ent-name,
2326 host-ent-addresses -- changing the values did not update the DNS
2328 * minor incompatible change: changed experimental JOIN-THREAD interface
2329 * documentation: the manual now lists reader and writer methods
2330 in class slot documentation sections. (thanks to Richard M Kreuter)
2331 * documentation: unwinding from asyncronous events has been
2332 documented as unsafe.
2333 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2334 in multithreaded application code.
2335 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2336 platforms. (thanks to James Anderson for the optimization hint)
2337 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2339 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2340 variants no longer cons.
2341 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2342 their NOT- variants no longer cons.
2343 * optimization: EQUAL hash tables no longer use SXHASH for objects
2344 of all data types, but instead use an EQL hash for types for which
2345 EQUAL is the same as EQL.
2346 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2347 are significantly faster.
2348 * optimization: new STRING-OUTPUT-STREAM implementation is much
2349 faster for large outputs and conses 30% less on average.
2350 * enhancement: XREF information is now collected for references made
2351 to global variables using SYMBOL-VALUE and a constant argument.
2352 * enhancement: SIGINT now causes a specific condition
2353 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2354 * bug fix: FILE-POSITION used to signal an error in some cases where
2355 ANSI requires it to return NIL.
2356 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2357 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2358 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2360 * bug fix: bad type declaration in the CLOS implementation has
2361 been fixed. (reported by James Anderson)
2362 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2363 (thanks to Lutz Euler)
2364 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2365 required by the CLHS. (reported by Samium Gromoff)
2366 * bug fix: dead unbound variable references now signal an error.
2367 (reported by Marco Monteiro)
2368 * bug fix: / with an unused value was being deleted in safe code.
2369 (thanks to Marco Monteiro and Kevin Reid)
2370 * bug fix: number of characters that can be written onto a single
2371 line in a file is unlimited.
2372 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2373 been fixed by inhibiting interrupts for when GC is disabled.
2374 * bug fix: some interrupt safety issues with GETHASH, (SETF
2375 GETHASH), CLRHASH and REMHASH have been fixed.
2376 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2377 specifier no longer causes infinite recursion.
2378 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2379 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2380 * bug fix: an &environment argument with the correct variable information
2381 is passed to macros that are expanded during byte compilation.
2382 (reported by Samium Gromoff)
2383 * bug fix: a logic error was causing the hash function for bignums to
2384 have excessive amounts of collisions. (reported by Faré Rideau)
2385 * bug fix: modifying the contents of an array could change the return
2386 value of SXHASH on that array, which is only allowed for strings
2387 and bit vectors. (bug introduced in 0.9.16)
2388 * improvement: the x86-64/darwin port now passes all tests (except
2389 for the debugger tests) but should still be considered
2390 experimental until this is fixed.
2391 * improvement: a style-warning is signaled for CASE (etc) clauses with
2392 duplicate keys. (thanks to Kevin Reid)
2393 * improvement: macos/x86 and macos/x86-64 now use mach exception
2394 handlers for dealing with illegal instructions (for trapping and
2395 error handling) and memory protection violations (for GC).
2397 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2398 * new platform: experimental support for x86-64/darwin (MacOS).
2399 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2400 and getnameinfo sockets functions are used instead of gethostbyaddr
2401 and gethostbyname, on platforms where the newer functions are available.
2402 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2404 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2405 don't print the startup banner, but behave as if --noinform was passed
2406 as a command line argument. (thanks to Kevin Reid)
2407 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2408 * optimization: code using alien values with undeclared types is much faster.
2409 * optimization: the compiler is now able to open code SEARCH in more cases.
2410 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2411 * bug fix: using standardized COMMON-LISP special variables as loop
2412 variables no longer signals bogus package lock violations. (reported
2414 * bug fix: declaring local loop variables to be of a range-limited type
2415 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2416 (reported by Andras Simon)
2417 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2418 bugs remain on x86-64.)
2419 * bug fix: the #= and ## reader macros now interact reasonably with
2420 funcallable instances.
2421 * bug fix: type-checks for function arguments were compiled using the
2422 compiler policy settings of the wrong lexical environment (in 1.0.2
2424 * bug fix: SHADOW accepts characters as string designators, as required
2425 by the spec (thanks to Eric Marsden)
2426 * bug fix: fixed GC safety issues when foreign functions are called with
2427 non-base strings as arguments
2428 * bug fix: more consistent error output for fatal-compiler-warnings, like
2430 * bug fix: functions with proper names were showing up as NIL in
2431 backtraces (reported by Edi Weitz, regression in 1.0.2)
2433 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2434 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2435 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2436 produce more efficient code on the x86 if the compiler can determine
2437 that (+ INDEX <constant>) does not require a bounds check and FOO
2438 has an element type at least 8 bits wide.
2439 * bug fix: references to undefined variables are handled the same way
2440 in toplevel forms as in the normal compiler
2441 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2443 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2444 (thanks to Jon Buller)
2445 * improvement: faster compilation times for complex functions
2446 * improvement: added readlink support to SB-POSIX (thanks to Richard
2449 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2450 * improvement: experimental support for mach exception handling on
2451 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2453 * improvement: support for GBK external format.
2454 (thanks to Chun Tian (binghe))
2455 * improvement: the debugger now displays variables that have been closed
2456 over, in code compiled with (DEBUG 2) or higher
2457 * improvement: support for executable cores on NetBSD (thanks to
2459 * new feature: added a RESTART-FRAME debugger command
2460 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2461 be used to provide an implementation for FILE-POSITION on Gray streams
2462 (thanks to Eric Marsden)
2463 * new feature: add syslog, openlog and closelog support to SB-POSIX
2464 (thanks to Richard Kreuter)
2465 * optimization: the function call overhead in code compiled with
2466 a high DEBUG optimization setting is significantly
2467 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2468 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2469 (thanks to Tony Martinez)
2470 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2471 evaluated once (reported by Kevin Reid)
2472 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2473 works again (thanks to Kilian Sprotte)
2474 * bug fix: an error is signaled for tagbodies with duplicate tags
2475 (thanks to Stephen Wilson)
2476 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2477 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2478 stack frames from alien callbacks.
2479 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2480 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2481 65k pages (thanks to David Woodhouse)
2482 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2484 changes in sbcl-1.0.1 relative to sbcl-1.0:
2485 * new platform: FreeBSD/x86-64, including support for threading.
2486 * new feature: the compiler stores cross-referencing information
2487 about function calls (who-calls), macroexpansion (who-macroexpands)
2488 and special variables (who-binds, who-sets, who-references) for code
2489 compiled with (< SPACE 3). This information is available through the
2490 sb-introspect contrib.
2491 * new feature: users may subclass SEQUENCE, and have instances of
2492 these classes interoperate with standard Common Lisp functions if
2493 a number of methods are defined. (This feature is experimental
2494 and the interface subject to change based on feedback from SBCL
2495 users and the general community)
2496 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2497 x86/x86-64, rather than the previous fixed depth of 8
2498 * improvement: another pthread back-end of mutex "pthread-futex".
2499 * bug fix: non-ascii command-line arguments are processed correctly
2500 (thanks to Yaroslav Kavenchuk)
2501 * bug fix: non-required arguments were not passed correctly when a method
2502 defined using DEFMETHOD was called from a mop-generated method using
2503 CALL-NEXT-METHOD (reported by Pascal Costanza)
2504 * bug fix: recursion is now permitted in accessors through
2505 SLOT-UNBOUND. (reported by Pascal Costanza)
2506 * bug fix: an error was signaled at startup if the HOME environment
2507 variable was defined, but had an empty value (reported by Peter Van Eynde)
2508 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2509 signal a PROGRAM-ERROR, not a BUG.
2510 * bug fix: SB-POSIX:READDIR works when built with large file support.
2511 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2513 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2514 for better automatic indentation support. (thanks to Matt Pillsbury)
2515 * optimization: loading generic functions no longer takes O(n^2) time,
2516 proportional to the amount of methods in the generic function
2517 (reported by Todd Sabin and Jeremy Brown)
2518 * optimization: the FIND and POSITION family of sequence functions
2519 are significantly faster on arrays whose element types have been
2521 * improvements to the Windows port:
2522 ** Intermittent heap corruption problems have been fixed. (thanks
2523 to Alastair Bridgewater)
2524 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2526 ** Lisp is able to unwind foreign exception frames from alien
2527 callbacks. (thanks to Alastair Bridgewater)
2529 changes in sbcl-1.0 relative to sbcl-0.9.18:
2530 * improvement: experimental support for threading on FreeBSD/x86.
2531 (thanks to NIIMI Satoshi)
2532 * improvement: runtime option --dynamic-space-size can be used
2533 to set the size of the dynamic space reserved on startup.
2534 * improvement: floating point modes in effect are now saved in
2535 core, and restored on startup.
2536 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2537 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2538 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2539 threads are not running after *SAVE-HOOKS* have run.
2540 * improvement: writes to CLOS instance slots are type-checked in code
2541 compiled with (SAFETY 3)
2542 * improvement: floating-point exception handling on FreeBSD (thanks to
2544 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2545 (thanks to Zach Beane)
2546 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2548 * improvement: added support for the Shift-JIS external format.
2549 (contributed by NIIMI Satoshi)
2550 * improvement: callbacks are supported on Linux/PPC. (thanks to
2552 * bug fix: compiler bug triggered by a (non-standard) VALUES
2553 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2554 * bug fix: file compiler no longer confuses validated and already
2555 dumped structurres. (reported by Kaersten Poeck)
2556 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2557 fill-pointer signals a type-error as required. (thanks to
2559 * bug fix: disassemly of funcallable instances works.
2560 * bug fix: single stepping on PPC.
2561 * bug fix: fix thread-safety problems in the type system (generally
2562 manifesting as nonsensical errors like "STRING is a bad type specifier
2563 for sequences" or "The value 1 is not of type FIXNUM")
2564 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2565 (reported by Josip Gracin)
2566 * bug fix: an error is signaled for attempts to displace arrays with
2567 incompatible element types (thanks to Mario Mommer)
2568 * bug fix: more correct handling of wide characters in debug info
2569 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2570 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2571 and don't cause extra consing
2572 * optimization: MAP and MAP-INTO are significantly faster on vectors
2573 whose elements types have been declared.
2574 * Improvements to SB-SPROF:
2575 ** Support for allocation profiling
2576 ** Reduced profiling overhead, especially for long profiling runs
2577 * Improvements to the Windows port:
2578 ** floating point exceptions are now reported correctly.
2579 ** stack exhaustion detection works partially.
2580 ** more accurate GET-INTERNAL-REAL-TIME.
2581 ** better RUN-PROGRAM behaviour in case of errors in the child
2583 ** PROBE-FILE now simplifies pathnames correctly.
2584 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2585 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2586 1st 1970 (although time timezone data will be unreliable).
2587 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2589 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2590 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2591 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2593 * bug fix: two potential GC deadlocks affecting threaded builds.
2594 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2595 returns T (reported by Anton Kazennikov)
2596 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2597 with non-variable places
2598 * bug fix: remove a race condition in the setting of
2599 funcallable-instance functions, this should make threaded CLOS
2600 code more stable against memory faults.
2601 * bug fix: corruption of specials when unbinding is interrupted by an
2602 asynchronous unwind (reported by Hannu Koivisto)
2603 * improvement: the debugger will now also display local variables that
2604 are only used once, for code compiled with a DEBUG optimization quality
2607 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2608 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2609 * incompatible change: External-format support for FFI calls. The
2610 SB-ALIEN:C-STRING no longer implies an ASCII
2611 external-format. Instead the string is subject to external-format
2612 conversion. Additionally return values of type SB-ALIEN:C-STRING
2613 are by default of type (SIMPLE-ARRAY CHARACTER), not
2614 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2615 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2616 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2617 * incompatible change: SB-EXT package no longer contains the
2618 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2619 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2621 * incompatible change: the single-stepper is no longer available
2622 on Alpha, Mips and Sparc platforms.
2623 * minor incompatible change: the direct superclasses of
2624 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2625 not (STANDARD-OBJECT FUNCTION). This makes the
2626 class-precedence-lists of GENERIC-FUNCTION and
2627 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2629 * minor incompatible change: the default stream external format on
2630 non-unicode SBCL is no longer detected from the locale, but is always
2632 * new feature: Add a version of evaluator that uses an interpreter instead
2633 of the compiler. EVAL still uses the compiler by default, to switch it
2634 to use the interpreter, set the value of the variable
2635 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2636 * minor incompatible change: the single-stepper REPL has been merged
2637 with the normal debugger (see the "Stepping" heading of the debugger help
2638 for more details). The debugger command STEP will no longer switch
2639 to the single-stepper REPL.
2640 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2641 for a type now works.
2642 * bug fix: loading of default sysinit file works. (thanks to Leonid
2644 * bug fix: better detection of circularities in the file-compiler.
2645 (reported by Marco Monteiro)
2646 * bug fix: the CL pathname functions now work with files that have
2647 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2648 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2649 systems with Unix98 pty semantics.
2650 * bug fix: ASDF-INSTALL will now work with bsd tar.
2651 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2653 * bug fix: timers expiring in dead threads no longer cause a
2654 type-error (reported by Paul "Nonny Mouse").
2655 * bug fix: thanks to more lightweight single-stepper instrumentation,
2656 code compiled with (DEBUG 3) will compile and execute significantly faster,
2657 and will have more accurate type-inferencing than before
2658 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2659 whose bindings are modified
2660 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2661 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2662 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2663 CL:SOFTWARE-VERSION with proper version
2665 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2666 * feature: implemented the READER-METHOD-CLASS and
2667 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2668 as specified by AMOP.
2669 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2671 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2672 (thanks to Lutz Euler)
2673 * optimization: hashing of general arrays and vectors has been
2674 improved. (reported by Any Fingerhut)
2675 * enhancement: SB-INTROSPECT is now able to find definitions of
2676 profiled functions. (thanks to Troels Henriksen)
2677 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2678 as well, allowing compiler-macros for SETF-functions to expand.
2679 * enhancement: step-instrumentation no longer wraps known
2680 single-value functions with multiple-value context, allowing
2681 better type inference.
2682 * fixed bug #337: use of MAKE-METHOD in method combination now works
2683 even in the presence of user-defined method classes. (reported by
2684 Bruno Haible and Pascal Costanza)
2685 * fixed bug #339(c): if there are applicable methods not part of any
2686 long-form method-combination group, call INVALID-METHOD-ERROR.
2687 (reported by Bruno Haible)
2688 * fixed bug #361: the :FUNCTION initarg in the protocol for
2689 initialization of methods can now be used to override
2690 internally-produced optimized functions. (reported by Bruno
2692 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2693 system-provided lambda expression no longer cause warnings about
2694 unbound #:|pv-table| symbols.
2695 * bug fix: improved the handling of type declarations and the
2696 detection of violations for keyword arguments with non-constant
2698 * bug fix: potentially erronous calls to PATHNAME and
2699 MERGE-PATHNAMES were being flushed in some cases.
2700 (reported by Richard Kreuter)
2701 * bug fix: compiled calls to TYPEP were mishandling obsolete
2702 instances. (reported by James Bielman and Attila Lendvai)
2703 * bug fix: format strings with ~> without matching ~< no longer
2704 trigger an AVER, but signal an understandable error instead.
2705 (reported by Antonio Martinez)
2706 * bug fix: specifying an output-file without a pathname-type for
2707 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2708 of input-file instead of "fasl". (reported by Robert Dodier)
2709 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2710 (reported by James Y Knight).
2711 * bug fix: compiler-macros-function did not consider the environment
2712 argument for shadowing by local functions.
2713 * bug fix: compiler-macros expansion was inhibited by local INLINE
2715 * bug fix: inline expansions of known functions were subject to
2716 step-instrumentation in high debug policies, leading to problems
2717 with type-inference.
2718 * bug fix: compiler failed to differentiate between different CONS
2719 types in some cases.
2720 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2721 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2722 * bug fix: #368: incorrect use of expressed vs. upgraded array
2724 * bug fix: #306a: more precise unions of array types.
2725 * thread-safety improvements:
2726 ** CONDITION-WAIT could return early on Linux, if the thread was
2727 interrupted and subsequently continued with SIGCONT.
2728 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2730 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2731 * added support for the ucs-2 external format. (contributed by Ivan
2733 * minor incompatible change: pretty printing of objects of type
2734 (cons symbol) is, in the default pprint-dispatch-table, now
2735 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2737 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2738 called later in a class's lifetime, possibly as late as when the
2739 first instance of the class is created. Previously,
2740 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2741 class became finalizeable.
2742 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2743 for multibyte external-format streams. (thanks to "vbzoli")
2744 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2745 with :ALLOCATION :CLASS inherited from superclasses of the
2747 * fixed bug: anonymous classes can now be created using the :NAME
2748 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2749 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2750 * fixed bug: core-files saved with :EXECUTABLE T can again be
2751 executed when SBCL_HOME isn't set. (reported by James Knight)
2752 * fixed bug: toplevel LOCALLY forms with declarations could
2753 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2754 * fixed bug: printing from several different threads using different
2755 values of *print-case* could cause invalid output, due to
2756 some internal special variables of the printer not being bound
2757 thread-locally (reported by Max Mikhanosha)
2758 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2759 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2760 (reported by Pascal Costanza)
2761 * fixed bug: FINALIZE-INHERITANCE is called from
2762 REINITIALIZE-INSTANCE on classes when the class has previously
2763 been finalized, as required by AMOP.
2764 * minor code generation optimizations:
2765 ** better register allocation in CLOS dispatching functions
2766 ** overflow detection when coercing signed bytes to fixnums on x86-64
2767 ** is now implemented with one IMUL instruction instead of three shifts
2768 ** more efficient bit-vector access on x86 and x86-64
2769 ** more efficient access to raw structure slots on x86 and x86-64
2770 * fixed some bugs revealed by Paul Dietz' test suite:
2771 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2772 return its argument.
2774 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2775 * feature: thread support on Solaris/x86, and experimental thread support
2777 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2779 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2780 default method for SLOT-UNBOUND.
2781 * minor incompatible change: prevent the user from specializing the
2782 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2783 somewhat counter to the intent of the protocol, I (CSR) think, and
2784 additionally it just doesn't work in SBCL as currently
2785 implemented, thanks to optimizations (that are always valid for
2786 the other three SLOT-VALUEish functions, but not for the setter).
2787 * minor incompatible change: the :SB-LDB feature is now enabled by
2788 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2789 the low-level debugger.
2790 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2791 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2792 down to an SB-SYS:FD-STREAM, allowing direct communication in
2793 more cases. Temporary files and pipes are still used as a fallback
2795 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2796 on the non-reentrant C functions localtime(3) and gmtime(3).
2797 * bug fix: global optimization policy was not visible in LOCALLY and
2799 * bug fix: class objects can be used as specializers in methods.
2800 (reported by Pascal Costanza)
2801 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2802 with a type error. (reported by blitz_ on #lisp)
2803 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2804 failed with a type error. (reported by Pascal Bourguignon)
2805 * bug fix: merging pathnames against defaults with :DIRECTORY
2806 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2807 (reported by James Y Knight)
2808 * bug fix: saving large (>2GB) cores on x86-64 now works
2809 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2810 constant index and a (simple-array (signed-byte 32)) array
2811 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2812 error (patch by Robert J. Macomber)
2813 * feature: TIME now displays the amount of run-time spent in GC
2814 * bug fix: The debugger now does a better job of respecting
2815 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2816 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2817 workaround for bug 403.)
2818 * bug fix: floating point exception handling now works on FreeBSD
2819 (thanks to NIIMI Satoshi)
2820 * fixed some bugs revealed by Paul Dietz' test suite:
2821 ** MISC.641: LET-conversion were not supposed to work in late
2823 * improvements to the Win32/x86 port:
2824 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2825 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2827 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2828 * new feature: source path information is generated for macro-expansion
2829 errors for use in IDE's like Slime (thanks to Helmut Eller)
2830 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2831 * bug fix: compiler does not loop forever on an invalid type in
2833 * improvement: compilation of most CLOS applications is significantly
2835 * optimization: added a limited bytecode compiler for simple toplevel
2836 forms, speeding up compilation and FASL loading
2837 * bug fix: the statistical profiler now properly distinguishes anonymous
2840 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2841 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2842 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2843 into subclasses of the finalized class. Now user calls to
2844 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2845 system return before any subclasses are finalized.
2846 * minor incompatible change: The reader no longer ignores errors
2847 regarding non-existent packages in #+ and #- feature tests.
2848 * new feature: command line options --no-sysinit, --no-userinit to
2849 inhibit loading the corresponding init files
2850 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2851 for sending data through UDP sockets (thanks to François-René Rideau)
2852 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2853 error is signalled instead (thanks to François-René Rideau)
2854 * minor incompatible change: Error signalling behaviour of lexical
2855 operations violating package locks has changed slightly. Refer to
2856 documentation on package locks for details.
2857 * enhancement: EVAL can process IF-expressions without resorting to the
2859 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2860 constant-folded properly due to missing out-of-line functions.
2861 (reported by Mika Pihlajamäki)
2862 * bug fix: LISTEN sometimes returned T even in cases where no data was
2863 immediately available from the stream
2864 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2865 were reversed. (reported by Levente Mészáros)
2866 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2867 when given a vector displaced to an adjustable array. (reported
2869 * bug fix: derivation of float boundaries from numbers outside the
2870 appropriate float range (reported by John Wiseman)
2871 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2873 * bug fix: precomputing cache entries for generic functions with
2874 some subclasses of specializers as yet invalid does not attempt to
2875 fill a cache line with a negative offset. (reported by Levente
2877 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2878 allow condition class objects as arguments to DOCUMENTATION and
2879 (SETF DOCUMENTATION); only find and set documentation for
2880 structure names for the STRUCTURE doc-type. (suggested by Gary
2882 * improvements to the Win32/x86 port:
2883 ** (user-homedir-pathname) and default initialization file
2884 locations now know about the user's "Documents and Settings"
2885 directory (thanks to Yaroslav Kavenchuk)
2886 ** run-program is implemented (thanks to Mike Thomas)
2887 ** sockets support (thanks to Timothy Ritchey)
2888 ** better backtrace support (thanks to Alastair Bridgewater)
2889 ** sb-grovel supported
2890 ** asdf-install and sb-posix work somewhat
2891 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2892 * improvements to the Solaris/x86 port:
2893 ** works on Solaris 11/Solaris Express
2894 ** floating-point exception handling support
2895 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2896 * fixed some bugs revealed by Paul Dietz' test suite:
2897 ** REMOVE-METHOD returns its generic function argument even when
2898 the method is not one of the generic functions' methods.
2899 ** objects declared as MEMBER types can be admissible arguments to
2900 structure accessors.
2901 ** printing characters should simply be printed by the FORMAT ~:C
2903 ** compiler failure when compiling functions with hairy constant
2904 defaults for optional parameters.
2905 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2906 function, which is already optimized.
2908 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2909 * new platform: experimental support for SBCL x86/Darwin, including
2910 MacOS X 10.4.5 on Intel.
2911 * new feature: Unicode character names are now known to the system
2912 (through CHAR-NAME and NAME-CHAR).
2913 * new feature: the filesystem location of SBCL's core file is
2914 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2915 * minor incompatible change: the contrib modules SB-POSIX and
2916 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2917 this change is to make it easier to distribute
2918 location-independent binaries.
2919 * bug fix: as implied by AMOP, standardized classes no longer have
2920 slots named by external symbols of public packages. (reported by
2922 * optimization: calling functions via constant symbols -- as in
2923 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2924 via the function object as in (FUNCALL #'FOO).
2925 * optimization: on x86 and x86-64, the calling convention for the
2926 case of dealing with an unknown number of values has been altered
2927 to be friendlier to the prediction heuristics implemented,
2928 particularly with reference to CALL and RET pairing. (thanks to
2929 Alastair Bridgewater)
2930 * optimization: on x86, the code for access to thread-local symbol
2931 values and binding/unbinding of thread-local symbols is smaller.
2932 (thanks to Alastair Bridgewater)
2933 * enhancement: CONSTANTP is now able to determine constantness of
2934 more complex forms, including calls to constant-foldable standardized
2935 functions and some special forms beyond QUOTE.
2936 * fixed bug: occasional GC crashes on Solaris/x86
2937 * optimization: x86-64 supports stack allocation of results of simple
2938 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2939 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2940 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2941 (thanks to James Knight)
2942 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2943 by the standard (thanks to Stephen Compall)
2945 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2946 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2947 be used for bundling the runtime and the core file into one
2948 executable binary. This feature is not currently supported on all SBCL
2949 platforms. (thanks to James Bielman and NIIMI Satoshi)
2950 * new feature: a generational or ephemeral garbage collector is now
2951 the default on the PowerPC platform (both Linux and Darwin). The
2952 old Cheney (stop and copy) collector is a build-time option.
2953 (thanks to Cyrus Harmon, after Raymond Toy)
2954 * minor incompatible change: the method by which SBCL finds its
2955 contributed modules has changed; it no longer relies on symbolic
2956 links from an $SBCL_HOME/systems directory, but searches directly
2957 in the subdirectories of $SBCL_HOME.
2958 * enhancement: the dynamic heap size on the Linux/PPC platform is
2959 markedly larger, even using the older Cheney garbage collector.
2960 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2961 certain complicated string types. (reported by Gary King)
2962 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2963 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2964 * fixed bug: DOCUMENTATION on structures no longer signals an
2965 error if no structure type of the right name exists. (reported by
2967 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2968 applicable non-standard primary or :AROUND method on
2969 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2970 no longer cause unbound variable errors. (reported by Kevin Reid)
2971 * fixed bug: metacircle resolution in cases where methods have slots
2972 added before the slots from STANDARD-METHOD. (reported by Jean
2974 * fixed bug: the Power PC assembly code for calling into lisp
2975 sometimes computed its return address wrongly (depending on the
2976 15th bit of the address, fixed at link time). This used to
2977 manifest itself in a segmentation violation while building PCL.
2978 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2979 many others over the years)
2980 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2981 the stack pointer (treated as a signed integer) is negative.
2982 (thanks to Peter van Eynde)
2984 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2985 * new platform: experimental support for the Windows operating
2986 system has been added. (thanks to Alastair Bridgewater)
2987 * fixed several bugs in and robustified the PPC FFI (including
2988 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2989 * bug fix: allow non-simple string symbol names (reported by Paul
2991 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2993 * bug fix: saving a core corrupted callbacks on x86/x86-64
2994 * bug fix: closed a loophole in metacircularity detection and
2995 grounding in the PCL implementation of CLOS.
2996 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2997 (reported by tomppa on #lisp)
2998 * bug fix: clear the direction flag on Lisp -> C transitions, as
2999 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3000 (reported by Andrej Grozin and Hendrik Maryns)
3001 * optimization: major improvements to GC efficiency on GENCGC platforms
3002 * optimization: faster implementation of EQUAL
3003 * optimization: emit more efficient opcodes for some common
3004 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3005 * optimization: several other minor code-generation improvements on x86-64
3006 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3008 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3009 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3010 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3011 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3012 by ANSI as a generic function, and for consistency (SETF
3013 GENERIC-FUNCTION-NAME) is treated likewise.
3014 * fixed bug #233.b: make constraint propagation notice when a variable
3015 value is changed after it is referenced but before it is used
3016 * fixed bug #296: no more arbitrary behaviour from filenames with
3017 odd characters as --load arguments. (reported by Adam Warner)
3018 * fixed bug #390: :CHARACTER-SET pathname components now work as
3019 expected. (reported by Tim Daly Jr)
3020 * fixed bug #391: complicated :TYPE intersections in slot
3021 definitions no longer cause an error in PCL internals.
3022 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3023 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3024 returning the number of octets which would be written to the
3025 file-stream. (thanks to Robert J. Macomber)
3026 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3027 arguments to the internal stream functions. (thanks to David
3029 * bug fix: stack exhaustion is now handled on the x86/SunOS
3030 platform. (thanks to Daisuke Homma)
3031 * bug fix: more accurate ROOM results on GENCGC platforms
3032 * optimization: improved type inference for arithmetic-for
3033 index variables in LOOP
3034 * optimization: faster floating-point SQRT on x86-64
3035 * fixed some bugs revealed by Paul Dietz' test suite:
3036 ** DOCUMENTATION returns NIL instead of "" for method combinations
3037 that don't have a docstring
3039 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3040 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3041 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3042 therefore are not customizeable by user code (as seems to be at
3043 least permitted and maybe required by AMOP). As a consolation,
3044 however, the SBCL implementation of these functions now calls
3045 REINITIALIZE-INSTANCE as specified by AMOP.
3046 * bug fix: slot-definition documentation is propagated as per ANSI
3047 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3048 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3049 argument, as do eslotd initialization methods. (from Pascal
3050 Costanza's "Closer" project)
3051 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3052 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3054 * bug fix: it is now possible to have more than one subclass of
3055 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3056 (reported by Bruno Haible, Pascal Costanza and others)
3057 * bug fix: the dependent update protocol now works for generic
3058 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3059 and Pascal Costanza)
3060 * bug fix: condition-class instances corresponding to
3061 DEFINE-CONDITION forms are now created eagerly. (reported by
3062 Kalle Olavi Niemitalo on comp.lang.lisp)
3063 * bug fix: floating point printing is more accurate in some
3064 circumstances. (thanks to Simon Alexander)
3065 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3066 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3067 * bug fix: callbacks on OS X now preserve stack-alignment.
3068 (thanks to Cyrus Harmon)
3069 * enhancement: the x86-64 disassembler is much better at
3070 disassembling SSE instructions. (thanks to Lutz Euler)
3071 * enhancement: CHECK-TYPE on a variable now allows type-inference
3072 (thanks to Vincent Arkesteijn)
3073 * optimization: improved performance of EUC-JP external format.
3074 (thanks to NIIMI Satoshi)
3075 * optimization: performance improvements to IO on file streams of
3076 :ELEMENT-TYPE CHARACTER
3077 * optimization: much faster memory allocation on x86-64
3078 * optimization: faster garbage collections (latency and throughput)
3080 * optimization: faster bignum subtraction and division on x86 and x86-64
3081 (thanks to Lutz Euler)
3082 * optimization: more accurate type-inference for loops that use a
3083 floating point index variable or a negative step.
3085 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3086 * bug fix: add a workaround to SBCL looping infinitely at startup on
3087 Linux kernels with apparently buggy implementations of personality().
3088 (thanks to Svein Ove Aas)
3089 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3090 (thanks to David Lichteblau)
3091 * bug fix: local bindings shadow global symbol macros for
3092 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3093 * optimization: non-open coded uses of numeric comparison operators
3094 (e.g. >) no longer cons when called with more than one parameter
3095 on platforms supporting dynamic-extent allocation.
3096 * enhancement: saving cores with foreign code loaded is now supported
3097 on MIPS/Linux in addition to the previously supported platforms.
3098 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3099 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3100 * bug fix: division by zero in sb-sprof when no samples were collected
3101 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3102 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3103 (thanks to Alexander Kjeldaas)
3104 * new feature: ignoring the return values of destructive functions
3105 like NREVERSE signals a compile-time style-warning.
3106 (thanks to Kevin Reid)
3107 * new feature: the alignment of alien structure fields can be
3108 explicitly specified. (thanks to Cyrus Harmon)
3109 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3110 and dump core on SIGQUIT
3112 ** incompatible change: threads do not inherit values of specials
3113 from their parents (see manual)
3114 ** bug fix: threads stacks belonging to dead threads are freed by the
3115 next exiting thread, no need to gc to collect thread stacks anymore
3116 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3117 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3118 ** bug fix: dynamic variable and thread start related gc lossage
3119 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3121 * fixed some bugs revealed by Paul Dietz' test suite:
3122 ** SUBTYPEP is slightly more accurate on heinously complicated
3123 CONS types where some of the members have uncertain (in the
3124 NIL, NIL sense) type relationships to each other.
3126 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3127 no longer purified unless :PURIFY T is explicitly specified.
3128 ** Non-purified cores are significantly smaller than before
3130 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3131 * new feature: timers based on Zach Beane's excellent timer package
3132 * added support for the following external formats: koi8-u,
3133 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3134 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3135 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3136 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3137 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3138 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3139 * incompatible change: a threaded SBCL will no longer revert to
3140 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3141 * bug fix: interrupts are disabled until startup is complete; no
3142 more sigsegvs when receiving a signal to soon
3143 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3145 * bug fix: add a workaround for the memory randomization features in
3146 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3147 workaround will only be in effect on systems with the proc filesystem
3149 * bug fix: printing objects of type HASH-TABLE signals a
3150 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3152 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3153 have been running for over 50 days. (reported by Gilbert Baumann)
3154 * bug fix: the logic for getting names of functions gets less
3155 confused when confronded with alternate-metaclass
3156 funcallable-instances. (reported by Cyrus Harmon)
3157 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3158 consistent, even on internal alternate-metaclass objects.
3159 * bug fix: flush closure information collected by physical
3160 environment analysis prepass before the main pass. (bug reported
3162 * bug fix: compiler pack phase does not modify a hashtable, which is
3163 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3164 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3165 may be expanded. (reported by Alexander <malishev> on c.l.l)
3166 * bug fix: no more style-warnings when compiling code using LAST
3167 under high-SPEED low-SPACE settings. (reported by David Wallin
3169 * fixed some incompatibilities between SBCL's MOP and the MOP
3171 ** the METAOBJECT class is now implemented;
3172 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3173 STANDARD-OBJECT, as required;
3174 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3175 now compatible (as required by VALIDATE-SUPERCLASS); there
3176 remains a consistency requirement over the presence or absence
3177 of the FUNCTION class in the superclass list of finalized
3178 classes; see the manual for more details;
3179 ** the :AROUND method for COMPUTE-SLOTS on
3180 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3181 requested slot ordering.
3183 ** bug fix: parent thread now can be gc'ed even with a live
3185 ** bug fix: binding a special with PROGV to no value is not
3186 the same as that symbol not having been bound (thanks to
3188 ** bug fix: binding specials is thread safe (thanks to
3190 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3191 and SB-SPROF do not die with 'no handler for signal XX in
3192 interrupt_handle_now(..)' anymore
3193 ** bug fix: WITH-TIMEOUT works with multiple running threads
3194 * fixed some bugs revealed by Paul Dietz' test suite:
3195 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3196 the :method-class keyword argument.
3198 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3199 * new port: the Solaris operating system on x86 processors is now
3200 mostly supported, though some rough edges in the environment
3201 remain. (thanks to Daisuke Homma)
3202 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3203 space for its heap. (thanks to Thiemo Seufer)
3204 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3205 closures. (thanks to Thiemo Seufer)
3206 * minor incompatible change: eof selects abort in the debugger.
3207 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3208 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3210 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3211 deprecated, and will go away in a future revision of SBCL.
3212 * minor incompatible change: GC-ON and GC-OFF are no longer
3213 implemented with a counter, it does not matter how many times gc
3214 is switched on or off
3215 * bug fix: discriminating functions for generic function classes
3216 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3217 make invalid assumptions about method precedence order. (reported
3219 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3220 platforms. (thanks to Thiemo Seufer)
3221 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3222 * bug fix: correct pathname printing with printer escaping is on.
3223 (thanks to Kevin Reid)
3224 * bug fix: complex VOP definitions in "user-space" no longer trigger
3225 package locks. (reported by Zach Beane)
3226 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3227 for funcallable-instance functions, and is no different from
3229 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3230 characters in the current readtable. (reported by Nicholas Neuss)
3231 * bug fix: SUBTYPEP on various CONS types returns more a more
3232 accurate acknowledgment of its certainty.
3233 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3234 lists in some cases. This partially fixes bug 384.
3235 * flush all standard streams before prompting in the REPL and the
3237 * bug fix: signal handling and triggering gc do not conflict
3238 directly anymore, in particular a high frequency sb-sprof does
3239 not prevent gc from running
3240 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3241 approximation for timezone and DST information between the
3242 universal time epoch and the smallest negative 32-bit time_t.
3243 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3244 year 1899 so long as the encoded time is non-negative.
3245 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3246 the correct answer for non-constant rotate amounts when performing
3247 an inline 32-bit rotation.
3249 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3250 there is only one thread in the session
3251 ** bug fix: memory leak for streams created in one thread and
3252 written to in another
3253 ** bug fix: lockup when compiled with gcc4
3254 ** bug fix: race that allows the gc to be triggered when gc is
3256 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3257 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3259 ** bug fix: finished threads are gc'ed properly
3260 * fixed some bugs revealed by Paul Dietz' test suite:
3261 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3262 has arguments with a different set of applicable methods from
3263 the orignal arguments.
3264 ** The type error thrown by MAP now has a correct expected-type
3266 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3267 name a compiled function.
3268 ** Three MISC tests where a large bignum was improperly coerced to
3269 a float that couldn't represent that bignum during type
3270 derivation were fixed.
3271 ** SUBTYPEP can now handle types involving the negation of a
3272 list-form FUNCTION type.
3273 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3274 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3275 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3277 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3278 * New feature: Experimental support for bivalent streams: streams
3279 opened with :element-type :default now allow character and binary
3280 (unsigned-byte 8) I/O
3281 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3282 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3284 * bug fix: no more highly sporadic "couldn't check whether ~S is
3285 readable" when reading a stream and an interrupt hits in the middle
3286 of a select system call
3287 * compiler better recognizes complex arrays (reported by Eduardo
3289 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3290 for variables on SBCL built with linkage-tables. (reported by Luis
3292 * various error reporting improvements.
3293 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3294 (Thanks to Thiemo Seufer)
3295 * bug fix: nested reader invokations work correctly
3296 * bug fix: it is possible to have simultaneous references to foreign
3297 code and foreign data with the same name.
3299 ** added x86-64 support
3300 ** incompatible change: the threading api now works with thread
3301 objects instead of thread ids
3302 ** bug fix: threads are protected from signals and interruption when
3303 starting up or going down
3304 ** bug fix: a race where an exiting thread could lose its stack to gc
3305 ** bug fix: don't halt on infinite error in threads if possible
3306 ** fixed numerous gc deadlocks introduced in the pthread merge
3307 ** bug fix: fixed thread safety issues in read and print
3308 ** bug fix: debugger doesn't hang on session lock if interrupted at
3309 an inappropriate moment
3310 ** bug fix: run-program is now thread safe(r)
3311 ** bug fix: inner with-recursive-lock no longer releases the mutex
3312 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3313 * fixed some bugs revealed by Paul Dietz' test suite:
3314 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3315 EXPECTED-TYPE slots filled.
3316 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3318 ** MAKE-CONDITION accepts classes as type-designators.
3319 ** COMPILE may never return NIL.
3320 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3321 range before calling Unix time functions
3323 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3324 * numerous signal handling fixes to increase stability
3325 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3326 * minor incompatible change: we now correctly canonize default
3327 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3328 as per the MOP, rather than the historical (INITARG INITFUNCTION
3329 INITFORM). (reported by Bruno Haible)
3330 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3331 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3332 for more information.
3333 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3334 pathname is a directory pathname.
3335 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3336 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3338 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3339 :METACLASS argument in addition to a class name. (reported by
3340 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3341 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3342 (reported by Bruno Haible; patch from Gerd Moellmann)
3343 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3345 * bug fix: more cleanups to the floating point exception handling on
3346 x86-64 (thanks to James Knight)
3347 * bug fix: the compiler does not try to constant fold calls of
3348 COERCE and BIT-* functions when they return freshly constructed
3349 objects. (reported by Nikodemus Siivola and Paul Dietz)
3350 * optimization: improved the MIPS versions of generic (in the
3351 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3352 * optimization: direct conversion of (unsigned-byte 32) to floats on
3353 the PowerPC platform.
3354 * optimization: structure instances with raw slots now use less
3355 memory, and probably show better memory locality. (thanks to
3357 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3358 are treated as requests for stack allocation on the x86-64,
3359 Alpha-32, PPC and SPARC platforms.
3360 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3361 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3362 (thanks to Tony Martinez)
3364 ** gcing a dead thread can no longer lead to lockups
3365 ** threads block signals until they are set up properly
3366 ** errno is no longer shared by threads
3367 ** interrupt-thread restores the eflags register on x86
3368 ** fixed some lockups due to gc/thread interaction
3369 * fixed some bugs revealed by Paul Dietz' test suite:
3370 ** invalid dotted lists no longer raise a read error when
3371 *READ-SUPPRESS* is T
3372 ** signal an error if a symbol that names a declaration is used
3373 as the name of a type, or vice versa
3374 ** allow using the (declare (typespec var*)) abbreviation for
3375 (declare (type typespec var*)) with all type specifiers
3376 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3377 ** always return NIL from PPRINT-POP when OBJECT is NIL
3378 ** don't signal errors when pretty-printing malformed LABELS,
3379 FLET or MACROLET forms
3380 ** declarations in a DOLIST body are also in scope for the
3382 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3384 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3387 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3388 * fixed cross-compiler leakages that prevented building a 32-bit
3389 target with a 64-bit host compiler.
3390 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3391 opened with :IF-EXISTS :OVERWRITE.
3392 * fixed bug 281: error for an invalid qualifier in a short-form method
3393 combination method is not signalled until the faulty method is called.
3394 * bug fix: iteration variable type inferrer failed to deal with open
3395 intervals. (reported by Alan Shields)
3396 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3397 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3398 or more runtime options were provided to the sbcl binary.
3399 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3400 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3401 * optimization: there's now a fast-path for fixnum arguments in the
3402 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3403 * optimization: the code generated on x86-64 is more compact thanks
3404 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3405 * bug fix: floating-point exception handling now partly works on
3406 x86-64. (Thanks to James Knight)
3407 * improvement to the MIPS backend from Thiemo Seufer: C-style
3408 64-bit long long arguments and return values to alien functions
3410 * fixed some bugs revealed by Paul Dietz' test suite:
3411 ** the type-error signalled from WARN has a filled-in DATUM slot.
3412 ** the type-error required when a stream is not associated with
3413 a file has the stream as its datum.
3414 ** type-errors on single-floats on x86-64 no longer have
3415 :INVALID-OBJECT as the datum
3416 ** the type-errors signalled for invalid function names now have
3417 a correct expected type
3418 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3419 for structures defined with a :TYPE. Documentation strings for
3420 typed structures are no longer immediately discarded
3421 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3422 broadcast streams and synonym streams. FILE-LENGTH now also works
3423 on broadcast streams.
3425 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3426 * incompatible change: the --noprogrammer option, deprecated since
3427 version 0.7.5, has been removed. Please use the equivalent
3428 --disable-debugger option instead.
3429 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3431 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3432 inoperational for a while now) has been completely removed.
3433 * null lexical environments are now printed as #<NULL-LEXENV>,
3434 significantly reducing the amount of clutter in typical backtraces.
3435 * documentation on weak pointers, finalization, and after GC hooks
3436 has been added to the manual.
3437 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3438 as other specialized array types, is much faster. SUBSEQ and
3439 COPY-SEQ on such arrays have also been sped up.
3440 * optimization: EQL is now more efficient when at least other argument
3441 is known to be of type (OR FIXNUM (NOT NUMBER)).
3442 * fixed bug: the runtime is now less vulnerable to changes in the
3443 size of the SBCL object on OS X, and virtual memory is reserved for
3444 all spaces that need to be at a fixed address.
3445 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3446 * fixed bug: finalizers and after GC hooks that cause consing are now
3448 * fixed bug: compiler error messages and summaries are now printed to
3449 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3450 * fixed inference of the upper bound of an iteration variable.
3451 (reported by Rajat Datta).
3452 * fixed bug 211e: calling local functions with duplicated constant
3453 keyword argument no longer causes a bogus style warning about an
3455 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3456 ftype declaration to be disregarded. (reported by Dave Roberts)
3457 * fixed bug 373: caused by erronous compilation of references to alien
3458 variables in the runtime on ppc/darwin.
3459 * fixed bug 376: CONJUGATE type deriver.
3460 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3461 (reported by Baughn on #lisp)
3462 * a cross-compiler bug on non-x86 platforms has been identified and
3463 fixed. (thanks to Bruno Haible)
3464 * improvements to the MIPS runtime code for increased stability.
3465 (thanks to Thiemo Seufer)
3466 * increased the maximimum compact environment size to allow
3467 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3468 * partial workaround for bug 135: don't name the function we're
3469 calling for hairy cases of EVAL, so as not to accumulate one environment
3470 entry per call to EVAL. (reported by Kevin Reid)
3471 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3472 * optimization: type testing for non-vector arrays should be faster.
3473 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3475 * bug fix: setting 31st element of a bit vector to zero did not work
3477 * bug fix: redefining a class definition which failed due to a
3478 previous accessor / function clash now works (but see BUGS entry
3479 #380 for more problems in this area). (thanks to Zach Beane)
3480 * the long form of DEFINE-METHOD-COMBINATION disables method group
3481 checking when given a single method group with pattern *. (thanks
3483 * on x86 compiler supports stack allocation of results of simple
3484 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3485 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3486 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3487 * fixed some bugs related to Unicode integration:
3488 ** the restarts for recovering from input and output encoding
3489 errors only appear when there is in fact such an error to
3491 * fixed some bugs revealed by Paul Dietz' test suite:
3492 ** MISC.549 and similar: late transformation of unsafe type
3493 assertions into derived types caused unexpected code
3495 ** SCALE-FLOAT type deriver is less wrong.
3496 ** type derivers for EXP, LOG and similar functions compute result
3497 types for complex arguments better.
3498 ** (MISC.563) CONJUGATE type deriver works for very restricted
3500 ** out-of-line type testers for character strings are available.
3501 ** EQUAL compiler transform understands specialness of objects
3503 ** accessing double-floats stored on the stack now works on x86-64.
3504 ** debugger internals could sometimes create invalid lispobjs,
3505 resulting in GC crashes.
3506 ** MISC.548: type check weakening can convert required type into
3508 ** initialization forms for bindings are not in scope of free special
3511 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3512 * incompatible change: thread support for non-NPTL systems has
3513 been removed - locking is buggy and unreliable. A threaded
3514 SBCL build will now warn at startup and refuse to create
3515 new threads, unless futex support is detected in the kernel
3516 * incompatible change: the top level REPL now has only an ABORT
3517 restart associated with it, not TOPLEVEL and ABORT as it used to.
3518 TOP and TOPLEVEL are now available as debugger commands for
3519 returning to the top level.
3520 * incompatible change: forms evaluated in the REPL now use the
3521 global optimization policy.
3522 * incompatible change: user- and system-initialization files are
3523 no longer processed with LOAD, but by READ and EVAL; hence the
3524 global optimization policy, startup package, readtable, etc,
3526 * The .fasl file format number has been incremented because of
3527 various incompatible changes.
3528 * internal entry point details and argument counts no longer appear
3529 in backtraces unless explicitly requested by setting
3530 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3531 * built-in and standard functions no longer have names like "top
3532 level local call to FOO".
3533 * fixed bug 32: functions defined in non-null lexical environments
3534 now have more legible printed representation
3535 * fixed bug 33: functions defined in non-null lexical environemnts
3536 are now more amenable to inspection by INSPECT.
3537 * workaround for bug 354: XEPs no longer appear in backtraces unless
3538 explicitly requested.
3539 * fixed bug: receiving the signal which results from attempting to
3540 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3541 SIGBUS on other *BSDs) on architectures where the C stack is also
3542 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3543 to debugger confusion or wild instability. (reported by Cheuksan
3545 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3546 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3547 (reported by Lutz Euler)
3548 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3549 compiled code. (reported by Paul Dietz)
3550 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3551 specialized parameter to a method to something that is not TYPEP
3552 the specializer is now possible.
3553 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3554 face of package deletion.
3555 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3556 pathname. (reported by David Tolpin on c.l.l)
3557 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3558 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3559 STRING-STREAM and FILE-STREAM, respectively.
3560 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3561 than previously; in addition, its test suite is now run on build.
3562 (thanks to Luke Gorrie)
3563 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3564 * optimization: added a immediate representation for single-floats
3566 * fixed some bugs revealed by Paul Dietz' test suite:
3567 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3568 ** attempting to create a package with a colliding nickname causes
3569 correctable errors to be signalled.
3570 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3571 ** several x86-64 backend bugs related to sign-extension of immediate
3574 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3575 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3576 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3578 * fixed loading of multiply forward-referenced layouts.
3579 (thanks to Cheuksan Wang)
3580 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3581 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3582 (see COMPILE-FILE documentation for details of :PRINT option)
3583 * fixed bugs 19 and 317: fixed-format floating point printing is
3584 more accurate. This also fixes a bug reported by Adam Warner
3585 related to the ~@F format directive.
3586 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3588 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3589 dispatch table if the from-char is a dispatch macro character.
3590 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3591 by the wordsize no longer ignore the last word. (reported by Lutz
3593 * fixed bug in type checking of dynamic-extent variables. (reported
3595 * optimization: sequence traversal functions use their freedom to
3596 coerce function designators to functions.
3597 * optimization: code with many calls to CLOS methods specialized on
3598 CLOS classes has had redundant type checks removed.
3599 * optimization: added declarations to speed up operations that access
3600 the internal character database (for example STRING-UPCASE)
3601 * optimization: comparison operations between floats and sufficiently small
3602 fixnums no longer create extra rationals
3603 * fixed some bugs related to Unicode integration:
3604 ** portions of multibyte characters at the end of buffers for
3605 character-based file input are correctly transferred to the
3606 start of the buffer at the next read.
3607 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3608 passing it through to OPEN.
3609 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3610 argument given to internal calls to OPEN.
3611 ** the built-in comment readers (introduced by character sequences
3612 ";" and "#|") are more forgiving to encoding errors; they will
3613 STYLE-WARN and then attempt to resync the stream at a character
3614 boundary. (thanks to Teemu Kalvas)
3615 * fixed some bugs in the x86-64 port:
3616 ** Negative short int return values from c-calls are sign-extended
3618 ** The stack is aligned to 16-bytes for c-calls, as required by
3619 the ABI. (thanks to Cheuksan Wang)
3620 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3621 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3622 for enums. (thanks to Vincent Arkesteijn)
3623 ** Multiple small optimizations and bugfixes for floating point
3625 * fixed some bugs revealed by Paul Dietz' test suite:
3626 ** Space, Tab, Linefeed, Return and Page have the invalid
3627 secondary constituent character trait.
3628 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3630 ** WITH-INPUT-FROM-STRING should only update the index place on
3632 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3633 works more reliably.
3634 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3635 with one-dimensional arrays with fill pointers.
3636 ** TYPE-OF failed on a complex with an integer realpart and a
3638 ** compiler failure during type inference for the code of form
3639 (IF (EQL X (THE ...)) ...) (MISC.535).
3641 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3642 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3643 platform. The port supports 61-bit fixnums, large memory spaces
3644 and reloading shared object files.
3645 * enhancement: saving cores with foreign code loaded is now
3646 supported on ppc/Darwin in addition to the previously supported
3648 * enhancement: the statistical profiler now walks deeper into the
3649 call stack for more meaningful call-graphs and accrued time
3650 reports (x86/x86-64 only). It also now reports time spent in
3652 * enhancement: it is now possible to trace most individual methods
3653 of a generic function in addition to tracing the generic function
3655 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3657 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3658 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3659 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3660 produces an error. (thanks to Vincent Arkesteijn)
3661 * bug fix: NAMESTRING on pathnames with :WILD components in their
3662 directories works correctly. (thanks to Artem V. Andreev)
3663 * fixed bug 125: compiler preserves identity of closures. (reported
3665 * bug fixed: functions with &REST arguments sometimes failed with
3666 "Undefined function" when compiled with (DEBUG 3). (reported by
3668 * bug fix: overflow during compiling of setting element of a bit
3669 vector with constant index and value. (reported by Timmy Douglas)
3670 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3671 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3672 * on x86 compiler partially supports stack allocation of dynamic-extent
3674 * GO and RETURN-FROM do not check the extent of their exit points
3675 when compiled with SAFETY 0.
3676 * fixed some bugs related to Unicode integration:
3677 ** encoding and decoding errors are now much more robustly
3678 handled; it should now be possible to recover even from invalid
3679 input or output to the terminal. (thanks to Teemu Kalvas)
3680 ** provided a first cut at implementing STRING-TO-OCTETS and
3681 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3682 ** altered the SB-MD5 contributed module slightly, changing the
3683 interface just enough for it to be supportable for builds where
3684 lisp characters are not eight bits.
3685 * fixed some bugs revealed by Paul Dietz' test suite:
3686 ** the FORMATTER-generated functions for ~V[ conditionals require
3687 the correct number of arguments.
3688 ** READ-FROM-STRING returns the mandated second value when applied
3689 to displaced strings.
3690 ** the #\Rubout and #\Backspace characters are treated as invalid
3691 constituent characters by the tokenizer.
3693 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3694 * new feature: reloading changed shared object files with
3695 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3696 * new feature: references to foreign variables and functions
3697 can now be compiled and loaded before the corresponding shared
3698 object file is loaded, as long as the foreign definitions are
3699 available at runtime.
3700 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3701 supported. (thanks to Dan Debertin)
3702 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3703 just keywords. (thanks to Vincent Arkesteijn)
3704 * fixed bug #331: structure-class instances corresponding to
3705 DEFSTRUCT forms are now created eagerly.
3706 * fixed bug #345: backtraces from calls to undefined functions work
3707 on x86 as well. Related bug #61 is now also partially fixed on x86
3708 (backtraces from throws to unknown catch tags.)
3709 * bug fix: lambda-list parsing is now stricter vrt. order and number
3710 of lambda-list keywords.
3711 * bug fix: as specified by AMOP, an error is signalled if a
3712 class-option appears multiple times in a DEFCLASS form. (reported
3714 * bug fix: RANDOM can be compiled when the compiler derives the type
3715 of its numeric argument as a disjoint set of small integers.
3716 (reported by Paul Dietz)
3717 * bug fix: starting a core saved with shared objects loaded when
3718 those objects are not available no longer causes threaded SBCL to
3719 hang. (reported by Sean Ross)
3720 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3722 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3723 argument, which must always be NIL. (reported by Kalle Niemitalo)
3724 * bug fix: printing 1.0d+23 no longer results in an error.
3725 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3726 * bug fix: structure slot setters preserve evaluation order. (thanks
3728 * fixed some bugs related to Unicode integration:
3729 ** RUN-PROGRAM can allow its child to take input from a Lisp
3730 stream. (reported by Stefan Scholl)
3731 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3732 locales. (reported by Ken Causey)
3733 * fixed some bugs revealed by Paul Dietz' test suite:
3734 ** INCF, DECF and REMF evaluate their place form as specified in
3736 ** FORMATTER expands ~{ ~} iteration directives with V or #
3737 parameters correctly.
3738 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3739 consequent uses no arguments correctly.
3740 ** the system has a partial understanding of the (COMPLEX RATIO)
3742 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3745 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3746 * new feature: a build-time option (controlled by the :SB-UNICODE
3747 keyword feature, enabled by default) for building the system with
3748 support for the entire 21-bit character space defined by the
3750 * new feature: the system now has rudimentary external-format
3751 support; the primary user-visible change at this time is that
3752 characters with the high bit set (such as lower-case-e-acute) will
3753 print correctly to a terminal in a UTF-8 environment.
3754 * minor incompatible change: BASE-CHAR no longer names a class;
3755 however, CHARACTER continues to do so, as required by ANSI.
3756 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3757 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3758 has been moved to the SB-EXT package (temporarily re-exported from
3760 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3761 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3763 * fixed bug #351: better error-handlind and reporting for malformed
3765 * fixed bug #350: bignum-printing is now more memory-efficient,
3766 allowing printing of very large bignums, eg. (expt 2 10000000).
3767 (reported by Bruno Haible)
3768 * fixed bug #302: better primitive-type selection for intersection
3770 * fixed bug #308: non-graphic characters now all have names, as
3771 required. (reported by Bruno Haible)
3772 * bug fix: redefining a class with different superclasses now correctly
3773 removes it from the direct-subclasses of its previous superclasses.
3774 (reported by David Morse)
3775 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3776 new value now works. (reported by Bruno Haible)
3777 * bug fix: correct canonicalization of multiple non-standard slot
3778 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3779 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3780 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3781 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3782 now exists, an signals an error.
3783 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3784 during macroexpansion for non-iteration variables as well. (reported
3785 by Bruno Haible for CMUCL)
3786 * bug fix: Cyclic structures and unprintable objects in compiler
3787 messages no longer cause errors. (reported by Bruno Haible)
3788 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3789 and READ-FROM-STRING all now return a primary value of NIL if
3790 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3791 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3792 (reported by Bruno Haible for CMUCL)
3793 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3794 do not designate a condition. (reported by Bruno Haible for
3796 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3797 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3798 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3799 permitting resolution in favour of any of the conflicting symbols.
3800 (reported by Bruno Haible for CMUCL)
3801 * bug fix: EQUAL compiler optimizations is less aggressive on
3802 strings which can potentially compare true despite having distinct
3803 specialized array element types.
3804 * bug fix: unit enumerations can be defined without dividing by
3805 zero. (thanks to Vincent Arkesteijn)
3806 * FORMAT compile-time argument count checking has been enhanced.
3807 (report from Bruno Haible for CMUCL)
3808 * a partial workaround for the bug 262: the compiler does not try to
3809 inline-expand a local function doing RETURN-FROM from a deleted
3810 BLOCK. (thanks to Peter Denno for the bug report and to David
3811 Wragg for the simple test case)
3812 * fixed some bugs revealed by Paul Dietz' test suite:
3813 ** RENAME-PACKAGE allows all package designators as new package
3815 ** constraint propagation and lambda variable substitution are
3816 more cautious in dealing with partially deleted code.
3817 ** compiler sometimes lost reoptimization passes.
3818 ** CERROR, given a condition as condition designator, passes its
3819 remaining arguments to the continue format control without
3821 ** Case-altering FORMAT directives work correctly on non-ASCII
3823 ** The REAL type specifier handles bounds outside the floating
3824 point ranges without signalling FLOATING-POINT-OVERFLOW.
3825 ** Functions with IR1-transformations can create intercomponent
3826 references to global functions.
3827 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3829 ** FORMAT ~R treats a nil value for its first parameter correctly.
3831 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3832 * enhancement: saving cores with foreign code loaded is now
3833 supported on x86/NetBSD and sparc/Linux in addition to the previously
3834 supported platforms.
3835 * bug fix: on some platforms repeated installations caused multiple
3836 copies of HTML documentation to be installed -- should not happen
3837 any more. (reported by Stefan Scholl)
3838 * bug fix: parsing self-recursive alien record types multiple times
3839 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3840 original patch by Helmut Eller for CMUCL)
3841 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3842 (thanks to Richard Kreuter)
3843 * bug fix: defining classes whose accessors are methods on existing
3844 generic functions in other (locked) packages no longer signals
3845 bogus package lock violations. (reported by François-René Rideau)
3846 * bug fix: special variables as DEFMETHOD parameters no longer have
3847 associated bogus type declarations. (reported by David Wragg and
3849 * bug fix: read-write consistency on streams of element-type
3850 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3851 * bug fix: redefiniton of the only method of a generic function with
3852 no DEFGENERIC no longer emits a full WARNING. In addition,
3853 redefinition of generic functions with no DEFGENERIC to an
3854 incompatible lambda list now signals an error. (thanks to Zach
3856 * bug fix: DEFGENERIC now works even when there's a function of the
3857 same name in an enclosing lexical environment. (thanks to Zach
3859 * fixed compiler failure, caused by instrumenting code during
3860 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3861 * optimization: added loop analysis and improved register allocation
3862 * fixed some bugs revealed by Paul Dietz' test suite:
3863 ** POSITION on displaced vectors with non-zero displacement
3864 returns the right answer.
3865 ** (SIMPLE-STRING) is a valid type specifier for sequence
3867 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3869 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3870 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3872 ** The justification version of the FORMAT ~< directive treats
3873 non-zero minpad parameter correctly.
3875 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3876 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3877 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3878 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3879 the supported interface.
3880 * new feature: Single-stepping of code compiled with DEBUG 2 or
3881 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3882 * new feature: saving cores with foreign code loaded is now
3883 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3884 Timothy Moore's work for CMUCL)
3885 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3886 parameters to * instead of NIL if no initform is supplied.
3887 (reported by Johan Bockgaard)
3888 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3889 correctly when FUNCALL appears as the car of the form. Note:
3890 despite this FUNCALL forms are not currently subject to
3891 compiler-macro expansion. (port of Raymond Toy's fix for the
3892 same from CMUCL, reported by Johan Bockgaard)
3893 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3894 (thanks for Teemu Kalvas)
3895 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3896 case instead of terminating the iteration (thanks for Julian
3897 Squires, Sean Champ and Raymond Toy)
3898 * bug fix: incorrect expansion of defgeneric that caused a style
3899 warning. (thanks for Zach Beane)
3900 * bug fix: slot accessor effective method computation works properly
3901 for classes with multiple non-standard applicable methods on
3902 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3903 * on x86 compiler supports stack allocation of results of LIST and
3904 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3905 CMUCL implementation by Gerd Moellmann)
3906 * fixed some bugs revealed by Paul Dietz' test suite:
3907 ** FORMAT strings with both the ~<~:;~> form of the justification
3908 directive and pretty-printing directives cause an error.
3910 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3911 * incompatible change: the internal functions
3912 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3913 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3914 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3915 instead of the old functions.
3916 * new feature: on platforms where "dladdr" is available foreign
3917 function names now appear in backtraces. (based on Helmut Eller's
3919 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3920 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3922 * documentation: ASDF manual is now distributed with SBCL.
3923 * bug fix: SBCL can now load its contributed modules with REQUIRE
3924 even if the system-provided entries have been removed from
3925 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3927 * bug fix: backtraces involving undefined functions or assembly
3928 routines are more informative. (thanks to Brian Downing)
3929 * bug fix: mutually referent alien structures now work correctly.
3930 (reported by Rick Taube)
3931 * bug fix: structures defined by WITH-ALIEN can be referred to
3932 within other definitions in the same WITH-ALIEN.
3933 * bug fix: division operators (MOD, TRUNCATE and the like) with
3934 constant zero divisors and integer dividends no longer generate
3936 * bug fix: provide default methods for INPUT-STREAM-P and
3937 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3938 * bug fix: improve the detection and resolution of MOP metacycles
3939 (where effective method computation depends on the generic function
3940 having its effective method computed). (reported by Bruno Haible)
3941 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3942 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3943 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3944 * bug fix: pathnames with relative directory components can be
3945 represented relative to default pathnames.
3946 * optimization: in taking the GCD of bignums, reduce the two bignums
3947 to approximately the same size (using Euclid's algorithm) before
3948 applying the more sophisticated binary GCD. (thanks to Juho
3950 * optimization: COUNT on bitvectors now operates word-at-a-time.
3951 * optimization: ASH with a positive, but not necessarily constant,
3952 (leftwards) shift, when in a modular context, is compiled to a
3954 * fixed some bugs revealed by Paul Dietz' test suite:
3955 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3956 if the corresponding argument is NIL.
3957 ** FORMAT directives accepting a minpad parameter treat negative
3959 ** literal commas as character parameters to FORMAT directives are
3961 ** literal spaces directly after ~<Newline> directives within a
3962 format-logical-block (~:< ~@:>) do not induce :FILL-style
3963 conditional newlines.
3964 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3965 as specified: it no longer includes conditional newlines).
3966 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3968 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3969 :PER-LINE-PREFIX argument does not evaluate to a string.
3971 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3972 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3973 the manual for details; for now, package locks can be disabled by
3974 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3975 if no major problems are found then it is likely that they will be
3976 compiled in unconditionally.
3977 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3978 unsupported operators on all platforms. To load a shared library
3979 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3980 object file, link it into a shared library outside of SBCL and
3981 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3983 * bug workaround: ROOM T and the GC were not working together
3984 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3985 reporting facility aren't preserved. That reporting has been
3986 disabled, so now until and unless someone figures out how to make it
3987 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3988 * minor incompatible change: as threatened around sbcl-0.8.0, the
3989 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3990 The symbols are also exported from SB-PCL for backwards
3991 compatibility, but more so than before SB-PCL should be treated as
3992 an implementation-internal package.
3993 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3995 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3996 It is known as of this release not to work on the Alpha, however.
3997 * fixed bug #167: errors signalled due to illegal syntax in method
3998 bodies are now more legible.
3999 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4000 designators and can hence be used with TYPEP.
4001 * fixed bug #333: CHECK-TYPE now ensures that the type error
4002 signalled, if any, has the right object to be accessed by
4003 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4004 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4005 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4007 * fixed bug #334: programmatic addition of slots using specialized
4008 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4009 and :ALLOCATION :CLASS slots.
4010 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4011 float exponents. (rereported by Peter Seibel)
4012 * fixed a bug: #\Space (and other whitespace characters) are no
4013 longer considered to be macro characters in standard syntax by
4014 GET-MACRO-CHARACTER.
4015 * fixed bug: initialization of condition class metaobjects no longer
4016 causes an instance of the condition to be created. (reported by
4018 * fixed bug: it is now possible to have slots such that
4019 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4020 description is neither :INSTANCE nor :CLASS.
4021 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4022 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4023 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4024 non-standard SLOT-DEFINITION-ALLOCATION values.
4025 * fixed bugs: various race conditions handling exiting threads.
4026 CL-PPCRE's thread torture test now passes.
4027 * fixed arguably-a-bug: GC time proportional to number of threads in
4028 system even when most of them are idle
4029 * optimization: improved performance of BIT and SBIT on bit-vectors.
4030 * .fasl file incompatibility: The fasl file version number has
4031 been incremented because of changes associated with package locks.
4033 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4034 * minor incompatible change: the system no longer provides
4035 optimization hints (conditions which are TYPEP
4036 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4037 mode; these hints are still emitted when higher SPEED optimization
4039 * new contrib module: a sampling profiler (profiling by statistical
4040 sampling, rather than by instrumenting functions) is available as
4041 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4042 * the behaviour of the standard function ED is now customizeable by
4043 third parties through a hook variable: see ED's documentation
4044 string for information on the protocol.
4045 * the compiler no longer emits efficiency notes for (FUNCALL X)
4046 when the type of X is uncertain under default optimization
4048 * fixed bug 276: mutating a binding of a specialized parameter to a
4049 method to something that is not TYPEP the specializer is now
4051 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4052 exhibit the required behaviour on the x86 platform. (thanks to
4053 Peter van Eynde, Eric Marsden and Bruno Haible)
4054 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4055 even for difficult arguments. (reported by Peter Graves)
4056 * fixed bug 141a: the backquote printer now descends quoted
4058 * fixed another bug in backquote printing: no more destructive
4059 modification of the form's list structure. (reported by Brian
4061 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4062 move between its address being taken and the call to
4063 interrupt_thread, fixing a crashing race condition.
4064 * the SB-POSIX contrib implementation has been adjusted so that it
4065 no longer exhibits ridiculously poor performance when constructing
4066 instances corresponding to C structs.
4068 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4069 * minor incompatible change: the sb-grovel contrib now treats C
4070 structures as alien (in the sense of SB-ALIEN) objects rather than
4071 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4072 has implications for memory management of client code
4073 (sb-grovel-returned objects must now be manually managed) and for
4074 type safety (alien objects now have full types).
4075 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4076 used to control emission of compiler diagnostics, rather than the
4077 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4078 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4079 quality should be considered deprecated.
4080 * install.sh now installs the user manual as well
4081 * (not quite a new documentable feature, but worth considering in
4082 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4083 beginnings of a semantically meaningful condition hierarchy is
4084 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4086 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4087 designator as the defaults argument.
4088 * fixed bug: Displaced arrays whose displaced-to array has become
4089 too small now cause ARRAY-DIMENSION to signal an error, providing
4090 for safer bounds-checking. (reported by Bruno Haible)
4091 * fixed bug: DEFCLASS slot definitions with identical :READER and
4092 :WRITER names now signal a reasonable error. (reported by Thomas
4094 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4096 * fixed bug: Invalid slot specification errors now print correctly.
4097 (thanks to Zach Beane)
4098 * fixed bug 320: Shared to local slot value transfers in class
4099 redefinitions now happen corrently from superclasses as
4100 well. (reported by Bruno Haible)
4101 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4103 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4104 improper lists correctly. (reported by Bruno Haible)
4105 * fixed bug 313: source-transform for <fun-name> was erroneously
4106 applied to a call of a value of a variable with name <fun-name>.
4107 (reported by Antonio Menezes Leitao)
4108 * fixed bug 307: The obsolete instance protocol ensures that
4109 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4110 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4111 remove dead unknown-values globs from the middle of the stack.
4112 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4113 easier to resume long computations after using *BREAK-ON-SIGNALS*
4114 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4115 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4116 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4117 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4118 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4119 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4121 * fixed a (fairly theoretical) bug in string printing: if
4122 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4123 does not have array-element-type equal to the most general string
4125 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4126 function name. (thanks to Nikodemus Siivola)
4127 * fixed bug: compile-time format string checker failed on
4128 non-closed ~{. (reported by Thomas F Burdick)
4129 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4130 don't warn on legal loop code involving more than one aggregate
4131 boolean. (thanks to Nikodemus Siivola)
4132 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4133 in keyword position to MAKE-PACKAGE was not being reported as
4135 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4136 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4138 * fixed bugs 280 and 312: the checking for multiple definitions in a
4139 file is less likely to become confused by uses of inline
4141 * fixed bug: the #S reader macro performs the keyword coercion
4142 specified for slot names. (reported by Kalle Niemitalo)
4143 * fixed bug: lambda lists may contain symbols whose names start with
4144 & but are not lambda-list-keywords; their occurrence triggers a
4146 * fixed bug 321: define-method-combination argument lambda lists do
4147 not cause invalid code to be generated when &optional or &aux
4148 variables have default values. (reported by Bruno Haible)
4149 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4150 have CLOS classes; this appears also to have fixed reported
4151 instability in stack exhaustion detection.
4152 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4153 MUFFLE-WARNING when no associated restart is present is now
4155 * optimization: rearranged the expansion of various defining macros
4156 so that each expands into only one top-level form in a
4157 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4159 * optimization: used a previously little-used slot in symbols to
4160 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4162 * fixed some bugs revealed by Paul Dietz' test suite:
4163 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4165 ** Fixed an optimization bug related to inheritance of initforms
4166 from local to shared slots.
4167 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4168 ** CAST optimizer forgot to flush argument derived type.
4169 ** print/read consistency on floats is now orders of magnitude
4170 more likely. (thanks also to Bruno Haible for a similar report
4172 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4173 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4174 for objects of type REAL. Make it so.
4175 ** SXHASH is specified (infelicitously) to respect similarity,
4176 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4177 it so. (thanks to Markus Ziegler)
4178 ** on the Alpha, the compiler succeeds in compiling functions
4179 returning a known number of arguments greater than 63.
4180 ** fixed handling of invalid NIL arguments in keyword position
4182 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4184 ** provided a readably-printable representation for RANDOM-STATE
4186 ** ensured that pathnames, where they have a namestring, always
4187 print using #P"..." syntax.
4189 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4190 * Support for the forthcoming 2.0 version of the NetBSD kernel
4191 running on x86 hardware has been added. (thanks to Perry
4192 E. Metzger most immediately, and others for their past work)
4193 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4194 current release version; SBCL's OpenBSD support had been broken
4195 since about the time of OpenBSD's switch to ELF binary format.)
4196 * [placeholder for DX summary]
4197 ** user code with &REST lists declared dynamic-extent, under high
4198 speed or space and low safety and debug optimization policy.
4199 * The manual has been converted to Texinfo format and the debugger
4200 chapter from the cmucl manual has been added.
4201 * A facility has been added to extract documentation strings from
4202 sbcl and store them as Texinfo-formatted snippets for inclusion in
4203 the manual (via Texinfo's @include directive)
4204 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4205 the test case to Dave Roberts)
4206 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4207 pointers. (reported by Sean Ross)
4208 * bug fix: PROFILE output is printed nicely even for large numerical
4209 values. (thanks to Zach Beane)
4210 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4211 greater than 32 handle EOF correctly.
4212 * bug fix: on X86 an immediate argument of the IMUL instruction is
4213 correctly printed in disassembly. (thanks to Lutz Euler)
4214 * bug fix: class slots in redefined classes preserve their old
4215 values. (thanks to Bruno Haible and Nikodemus Siivola)
4216 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4217 succeeds. (reported by Marco Baringer)
4218 * fixed some bugs revealed by Paul Dietz' test suite:
4219 ** READ-SEQUENCE now works on ECHO-STREAMs.
4220 ** RATIONALIZE works more according to its specification. (thanks
4223 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4224 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4225 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4226 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4227 should matter to you only if you rebind the printer control
4228 variables and then find you want different bindings in the
4229 debugger than in the ordinary execution of your program.)
4230 * The runtime build system has been tweaked to support building
4231 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4232 assembler and linker. (thanks to Nikodemus Siivola)
4233 * Unbound, undefined, undeclared variables now trigger full
4234 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4235 more often programmer error than deliberate exploitation of undefined
4237 * optimization: the hash algorithm for strings has changed to one
4238 that is less vulnerable to spurious collisions. (thanks to Juho
4240 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4241 needless bounds checking. (thanks to Juho Snellman)
4242 * optimization: implemented multiplication as a modular
4243 (UNSIGNED-BYTE 32) operation on the PPC backend.
4244 * fixed some bugs revealed by Paul Dietz' test suite:
4245 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4247 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4248 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4249 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4251 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4253 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4255 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4256 their output stream on EOF from read.
4257 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4258 have been read to end-of-file.
4259 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4261 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4262 description of determination of which consecutive characters
4264 ** Printing the "Space" character with escaping on now yields "#\\ ",
4265 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4266 ** Reading floating-point numbers with *READ-BASE* set to a number
4267 less than 10 works correctly.
4268 ** Reading floating-point numbers with *READ-BASE* set to a number
4269 more than 10 works correctly.
4270 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4271 the readtable currently in effect.
4273 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4274 * minor incompatible change: parsing of namestrings on a physical
4275 (Unix) host has changed; numbers after the final #\. in a
4276 namestring are no longer interpreted as a version field. This is
4277 intented to be largely invisible to the user, except that the
4278 meaning of the namestring "*.*.*" has changed: it now refers to a
4279 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4280 should usually be replaced by
4281 (make-pathname :name :wild :type :wild :version :wild)
4282 with the added benefit that this is more likely to be portable.
4283 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4284 option to OPEN now signals an error if the file being opened
4285 exists; this may have an impact on existing code.
4286 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4287 signals received, on the PowerPC platforms (both Linux and
4288 Darwin). (thanks to Pierre Mai for pointing out the location of
4290 * several fixes on OS X: The system now builds and runs cleanly on
4291 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4292 (thanks to Brian Mastenbrook)
4293 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4294 second-resolution: integer multiples of 1/3600 between -24 and 24.
4295 (thanks to Vincent Arkesteijn)
4296 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4297 type when called with 1 argument; PEEK-CHAR checked type of
4298 PEEK-TYPE only after having read first character from a
4299 stream. (reported by Peter Graves)
4300 * bug fix: the garbage collector now has much better locality
4301 behaviour, and in particular no longer treats all memory as being
4302 exhausted when many small objects point to each other in a deeply
4304 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4305 recognized as being TYPEP their class.
4306 * bug fix: the PUSHNEW documentation string has been corrected.
4307 (thanks to Vincent Arkesteijn)
4308 * bug fix: defaulting of the value for the last of an atypically
4309 large number of multiple values being bound was not being
4310 performed correctly on the Alpha or PPC platforms
4311 * optimization: implemented multiplication as a modular
4312 (UNSIGNED-BYTE 32) operation on the x86 backend.
4313 * optimization: SEARCH on simple-base-strings can now be open-coded.
4314 (see also contrib/compiler-extras.lisp for inspiration for
4315 teaching the compiler about the Boyer-Moore algorithm).
4316 * value, returned by MAX (and MIN) called with several EQUALP, but
4317 not EQL, arguments now does not depend on compiler settings.
4318 * fixed some bugs revealed by Paul Dietz' test suite:
4319 ** in stack analysis liveness information is propagated from
4320 non-local entry points.
4321 ** pathwise CAST removing failed when the CAST node did not start
4323 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4324 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4326 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4327 host is already defined.
4328 ** RENAME-FILE works on streams instead of signalling an internal
4330 ** PEEK-CHAR uses the current readtable when determining whether
4331 or not a character is whitespace.
4332 ** MERGE-PATHNAMES handles the case when the pathname does not
4333 specify a name while the default-pathname specifies a version.
4334 ** Pathnames now stand a better chance of respecting print/read
4336 ** Attempting to use standardized file system operators with a
4337 pathname with invalid :DIRECTORY components signals a
4339 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4341 ** DIRECTORY on logical pathnames is more correct.
4342 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4343 signal a TYPE-ERROR if their argument is not a stream.
4344 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4345 designator argument does not designate a stream.
4346 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4347 examining the synonym.
4348 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4350 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4351 element-type larger than ([UN]SIGNED-BYTE 32).
4353 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4354 * When built with the :SB-FUTEX feature, threaded builds now take
4355 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4356 for faster/more reliable mutex and condition variable support.
4357 * Incompatible change (but one you probably shouldn't have been using
4358 anyway): the interface and code for arbitrating between multiple
4359 threads in the same user session has been redesigned.
4360 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4361 error when called without an explicit environment argument.
4362 (thanks to Nikodemus Siivola)
4363 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4364 confused about their position. (thanks to Adam Warner and Gerd
4366 * bug fix: Pretty printing backquoted forms with unquotations in the
4367 argument list position of various code constructs such as LAMBDA
4368 now works correctly. (reported by Paul Dietz)
4369 * bug fix: Pretty printing unquotations no longer loses all
4370 stream position information.
4371 * optimization: performance of string output streams is now less
4372 poor for multiple small sequence writes.
4373 * optimization: performance of CSUBTYPEP in the presence of complex
4374 expressions involving CONS and NOT many times has been improved.
4375 (reported by Paul Dietz)
4376 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4378 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4379 streams for the REPL, for the debugger, and so on. (thanks to
4381 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4382 * fixed some bugs revealed by Paul Dietz' test suite:
4383 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4384 is ignored if it is too small, rather than propagating through
4385 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4386 ** extremely complex negations of CONS types were not being
4387 sufficiently canonicalized, leading to inconsistencies in
4389 ** VALUES tranformer lost derived type.
4391 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4392 * fixed a bootstrapping bug: the build process no longer assumes
4393 that the various BOOLE-related constants have the same value in
4394 host and target lisps. (noted by Paul Dietz' test suite on an
4395 SBCL binary built from CLISP)
4396 * The system can now be dynamically linked on the MIPS platform,
4397 which enables dynamic loading of foreign code from Lisp. (thanks
4398 to Ralf Baechle for discussions on the MIPS ABI)
4399 * The system now records debugging information for its own source
4400 files in a filesystem-position-independent manner, relative to
4401 the "SYS" logical host.
4402 * fixed a compiler bug: MV-LET convertion did not check references
4403 to the "max args" entry point. (reported by Brian Downing)
4404 * tweaked disassembly notes to be less confident about proclaiming
4405 some instruction as an LRA. (thanks to Brian Downing)
4406 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4407 now each have their own history, command character, and other
4408 characteristics. (thanks to David Lichteblau)
4409 * fixed some bugs revealed by Paul Dietz' test suite:
4410 ** compiler failure in compiling LOGAND expressions including a
4412 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4413 shift greater than 32.
4414 ** FLUSH-DEST did not mark blocks for type check regeneration.
4415 ** HANDLER-CASE failed to accept declarations in handler clauses
4416 in some circumstances.
4418 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4419 * New code in contrib/sb-introspect (still probably not entirely
4420 stable yet) provides some support for smart Lisp development
4421 environments like SLIME.
4422 * The conditions signalled for errors occurring when loading .fasl
4423 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4424 in a way which should help ASDF recover gracefully.
4425 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4426 stuff has been cleaned up. If you code contrib/ stuff, this might
4427 affect you, and you can look at contrib/README, contrib/STANDARDS,
4428 and/or the 0.8.4.27 diff to check.
4429 * In full calls the compiler now does not generate checks for declared
4430 argument types for all arguments.
4431 * various threading fixes
4432 ** and some experimental patches which didn't make it into
4433 the main tree for this release, but which are shipped in
4434 contrib/experimental-thread.patch as a possible fix for some
4435 failures (deadlock, spinning...) in GC-intensive multithreaded
4437 * fixed PPC build problem (source code incompatibility of different
4438 library versions): added offsetof() hackery which attempts to divine
4439 where glibc maintainers put uc_mcontext today
4440 * fixed bug 282: compiler does not trust type assertions while passing
4441 arguments to a full call.
4442 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4443 &OPTIONAL VALUES type parameter.
4444 * fix bug 214: algorithm for noting rejected templates is now more
4445 similar to that of template seletion. (also reported by rydis on
4447 * fixed bug 141b: printing backquoted information readably and prettily
4448 inserts a space where necessary.
4449 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4450 (CHARACTER 10) are now reported as errors, rather than propagated
4451 as unknown types. (reported by piso on #lisp)
4452 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4453 with values NIL and :ERROR. (thanks to Milan Zamazal)
4454 * fixed bug 191c: CLOS now does proper keyword argument checking as
4455 described in CLHS 7.6.5 and 7.6.5.1.
4456 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4457 longer raise an error; further, using a list as a for-as-arithmetic
4458 counter now raises a meaningful error.
4459 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4460 now understood by sequence creation functions such as MAKE-SEQUENCE
4462 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4463 a STRING-INPUT-STREAM.
4464 * compiler enhancement: SIGNUM is now better able to derive the type
4466 * type declarations inside WITH-SLOTS are checked. (reported by
4468 * fixed some bugs revealed by Paul Dietz' test suite:
4469 ** incorrect optimization of TRUNCATE for a positive first
4470 argument and negative second.
4471 ** compiler failure in let-convertion during flushing dead code.
4472 ** compiler failure while deriving type of TRUNCATE on an
4473 interval, containing 0.
4474 ** ASH of a negative bignum by a negative bignum count now returns
4476 ** intersection of CONS types now canonicalizes properly, fixing
4477 inconsistencies in SUBTYPEP.
4479 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4480 * incompatible change: The --disable-debugger command line
4481 option now clobbers the debugger at a more fundamental
4482 level, by redefining #'INVOKE-DEBUGGER instead of by
4483 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4484 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4485 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4486 enter the debugger REPL and then suffer recursive errors
4487 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4488 while under the new system, BREAK in --disable-debugger mode
4489 terminates the system just as an unhandled error would.
4490 * fixed compiler performance when processing loops with a step >1;
4491 * bug fix: DOCUMENTATION now retrieves generic function
4492 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4493 support has been systematized, and now supports the methods
4494 specified by ANSI, along with a default method and a method for
4495 slot documentation. (reported by Nathan Froyd)
4496 * bug fix: effective methods associated with a generic function are
4497 no longer cached over a change of that generic function's method
4498 combination. (reported by Andreas Fuchs)
4499 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4500 names a non-existent directory. (thanks to Andreas Fuchs)
4501 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4502 the PPC platform, lead to stack corruption; this has been fixed.
4503 (reported by Rainer Joswig)
4504 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4505 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4506 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4507 arithmetic in general, is now much more reliable on the PPC
4509 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4510 platform now returns the right answer.
4511 * optimization: restored some effective method precomputation in
4512 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4513 precomputation is now tunable.
4514 * optimization: compiler-internal data structure use has been
4515 reviewed, and changes have been made that should improve the
4516 performance of the compiler by about 20%.
4517 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4518 simple-base-strings and simple-bit-vectors is improved.
4519 * optimization: the optimization of 32-bit logical and arithmetic
4520 functions introduced in version 0.8.3 on the x86 has been
4521 implemented on the mips, ppc and sparc platforms; an
4522 implementation of the same facility, but for 64-bit arithmetic,
4523 has been added for the alpha.
4524 * microoptimization: the compiler is better able to make use of the
4525 x86 LEA instruction for multiplication by constants.
4526 * bug fix: in some situations compiler did not report usage of
4527 generic arithmetic in (SPEED 3) policy.
4528 * bug 145b fix: compiler used wrong type specifier while converting
4529 MEMBER-types to numeric.
4530 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4532 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4533 index argument now works properly on the Alpha platform.
4534 * bug fix: floating point exception treatment on the Alpha platform
4536 * bug fix: FILE-POSITION works much better on string input and
4537 output streams. (thanks to Nikodemus Siivola)
4538 * bug fix: many threading/garbage collection symptoms sorted.
4539 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4540 might be pseudo-atomic.
4541 * internal change: Stopping for GC is now done with signals not
4542 ptrace. GC is now done in whichever thread wanted it, instead of
4544 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4546 * bug fix: result form in DO is not contained in the implicit
4548 * incompatible change: ICR structure is changed; the value part of
4549 CONTINUATION is now called LVAR; corresponding functions are
4550 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4551 * added type deriver for ISQRT (thanks to Robert E. Brown).
4552 * bug fix: better support for loading from the command line when an
4553 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4555 * fixed some bugs revealed by Paul Dietz' test suite:
4556 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4557 ** ROUND and FROUND now give the right answer when given very
4558 small float arguments.
4559 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4561 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4562 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4563 ** LCM should return a non-negative integer.
4564 ** PARSE-INTEGER returned the index of a terminator instead of the
4565 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4566 ** PARSE-INTEGER returned an incorrect index being applied to a
4568 ** LCM with two arguments of 0 returns 0 rather than signalling
4570 ** unsigned addition of a 32-bit constant with the high bit set no
4571 longer causes an internal compiler error on the x86.
4572 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4573 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4574 with negative last argument.
4575 ** byte specifiers with zero size and position no longer cause
4576 an error during type derivation.
4577 ** bignum multiplication on the Alpha platform now returns the
4579 * porting: The system now builds on SuSE AMD64, although it still
4580 generates a 32-bit binary.
4581 * .fasl file incompatibility: The fasl file version number has
4582 been incremented (because of the changes to internal compiler
4583 data structures referred to above).
4585 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4586 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4587 more accurately, on the Darwin kernel running on PowerPC hardware.
4588 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4589 * Compiler code deletion notes now signal a condition of type
4590 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4591 an associated MUFFLE-WARNING restart.
4592 * The compiler now performs limited argument count validation of
4593 constant format strings in FORMAT, and where appropriate in ERROR,
4594 CERROR and WARN. (thanks to Gerd Moellmann)
4595 * New ASDF-INSTALL contrib can be used for automatic download and
4596 installation of third-party Lisp code from CCLAN or other sites
4598 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4599 which forces another thread to execute a function supplied by the
4601 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4602 now accept and act upon their :ELEMENT-TYPE keyword argument.
4603 (reported by Martin Atzmueller, Edi Weitz)
4604 * bug fix: FILE-POSITION now accepts position designators up to
4605 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4606 is the greater. (thanks to Patrik Nordebo)
4607 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4608 Kalle Olavi Niemitalo)
4609 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4610 printable. (reported by Eric Marsden)
4611 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4612 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4613 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4614 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4615 (thanks to Stig Sandoe)
4616 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4617 UNREAD-CHAR now correctly includes the unread character in the
4618 target sequence. (thanks to Gerd Moellmann)
4619 * bug fix in threaded builds: the system can now be suspended and
4620 resumed by shell job control with minimal disruption.
4621 * bug fixes in times and timezones >2038AD
4622 * better handling of "where is GNU make?" problem in build scripts
4623 (thanks to Nikodemus Siivola)
4624 * new optimization: inside a named function any reference to a
4625 function with the same name is considered to be a self-reference;
4626 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4627 optimization quality.
4628 * new optimization on x86: logical functions and + now have
4629 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4630 used when the result is truncated to 32 bits.
4631 * VALUES declaration is partially enabled.
4632 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4633 * fixed some bugs revealed by Paul Dietz' test suite:
4634 ** The system now obeys the constraint imposed by
4635 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4636 types form a lattice under type intersection.
4637 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4638 ** ASSOC now ignores NIL elements in an alist.
4639 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4640 and (1+ MOST-POSITIVE-FIXNUM) answers.
4641 ** The addition of a method with invalid qualifiers to a generic
4642 function does not cause an error to be signalled immediately;
4643 a warning is signalled, and the error is generated only on
4644 calling the generic function.
4645 * changed .fasl file version number, in part to add type codes for
4646 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4647 obscure ANSI requirements
4649 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4650 * fixed bug 148: failure to inline-expand a local function left
4651 garbage, confusing the compiler.
4652 * fixed bugs 3cd: structure slot readers perform type check if the
4653 slot can have an invalid value (i.e. it is either not initialized
4654 or can be written with a less specific slot writer).
4655 * bug fix: the compiler now traps array references to elements off
4656 the end of an array; previously, the bounds checking in some
4657 circumstances could go off-by-one.
4658 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4660 * type declarations for array element types now obey the description
4661 on the CLHS page "Declaration TYPE", as per discussions on
4662 sbcl-help around 2003-05-08. This means that a declaration
4663 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4664 declaration, all references to BAR will be asserted or assumed
4665 (with THE, so dependent on compiler policy) to involve objects of
4666 type FOO. Note that no such declaration is implied in
4667 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4668 * declared types of functions from the "Conditions"
4669 chapter. (reported by Paul Dietz)
4670 * bug fix: CERROR accepts a function as its first argument.
4671 * bug fix: NTH an NTHCDR accept a bignum as index
4672 arguments. (reported by Adam Warner)
4673 * optimization: character compare routines now optimize comparing
4674 against a constant character. (reported by Gilbert Baumann)
4675 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4676 argument now works properly on the MIPS platform.
4677 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4678 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4679 declared to have a functional type, does not cause an error
4681 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4682 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4683 * fixed bug: if last continuation of a deleted block has a
4684 destination, this destination should be deleted too. (reported by
4686 * fixed a bug in the bootstrap process: the host compiler's values
4687 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4688 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4689 test case from Patrik Nordebo)
4690 * improved the ability of the disassembler on the PPC platform to
4691 provide helpful disassembly notes.
4692 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4693 the class in more cases than previously.
4694 * bug fix: FILE-POSITION now understands :START and :END for
4695 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4696 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4697 8) data. (thanks to David Lichteblau)
4698 * bug fix: it is possible to add a method to a generic function
4699 without lambda list.
4700 * bug fix: reader failed to signal END-OF-FILE inside an
4701 object representation. (reported by Nikodemus Siivola)
4702 * fixed some bugs revealed by Paul Dietz' test suite:
4703 ** LAST and [N]BUTLAST should accept a bignum.
4704 ** condition slot accessors are methods.
4705 ** (VECTOR NIL) is a subtype of STRING.
4707 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4708 * minor incompatible change: some nonsensical specialized lambda
4709 lists (used in DEFMETHOD) which were previously ignored now signal
4711 * minor incompatible change: the system is now aware of the types of
4712 variables in the COMMON-LISP package, and will signal errors for
4713 most violations of these type constraints (where previously they
4714 were silently accepted).
4715 * minor incompatible change: COMPILE-FILE now uses the freedom
4716 afforded (ANSI 3.2.2.3) to use derived function types for
4717 functions defined in the same file. This also permits the system
4718 to warn on static type mismatches and function
4719 redefinition. (Currently it does not work with high DEBUG level.)
4720 * minor incompatible change: VALUES declaration is disabled.
4721 * When issuing notes, the compiler now signals a condition of type
4722 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4723 restart for use in user handlers. It is expected that the
4724 COMPILER-NOTE condition will eventually become a condition
4725 supertype to a hierarchy of note types, which will then be
4726 handleable in a similar fashion. However, at the moment, no such
4727 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4728 but it's an implementation detail, not a classification for the
4730 * Changes in type checking closed the following bugs:
4731 ** type checking of unused values (192b, 194d, 203);
4732 ** template selection based on unsafe type assertions (192c, 236);
4733 ** type checking in branches (194bc).
4734 * A short form of VALUES type specifier has ANSI meaning (it has
4735 increased the number of situations when SBCL cannot perform type
4737 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4738 keywords or constants is permissible.
4739 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4740 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4741 classes. (thanks to Antonio Martinez)
4742 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4743 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4744 argument to a pretty-print stream. Instead, it leaves any such
4745 operations to DESCRIBE-OBJECT methods.
4746 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4748 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4749 lambda lists. (thanks to David Lichteblau)
4750 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4751 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4752 (thanks to Gerd Moellmann)
4753 * fixed bug 246: increased compilation speed of long
4754 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4756 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4758 * DEFCONSTANT now throws a condition of type
4759 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4760 constant to a non-EQL value; CONTINUE and ABORT restarts
4761 respectively change and preserve the value.
4762 * fixed bug 63: The code walker, part of the implementation of CLOS,
4763 is now better at handling symbol macros.
4764 * bug fix: There is no longer an internal implementation type named
4765 CL:LENGTH. (reported by Raymond Toy)
4766 * bug fix: In macro-like defining macros/special operators the
4767 implicit block does not enclose the lambda list.
4768 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4769 enclosed in parentheses) are not suitable as type specifiers, and
4770 their use properly signals an error now.
4771 * bug fix: An argument count mismatch for a type specifier in code
4772 being compiled no longer causes an unhandled error at compile
4773 time, but signals a compile-time warning.
4774 * fixed simple vector readable printing
4775 * bug fix: DESCRIBE takes more care over whether the class
4776 precedence list slot of a class is bound before accessing it.
4777 (reported by Markus Krummenacker)
4778 * bug fix: FORMATTER can successfully compile pretty-printer format
4779 strings which use variants of the ~* directive inside.
4780 * bug fix: SEARCH now applies its TEST predicate to the elements of
4781 the arguments in the correct order. (thanks to Wolfhard Buss)
4782 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4783 in type inference. (thanks to Robert E. Brown)
4784 * bug fix: Reading in symbols with an explicit package name of ""
4785 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4786 * fixed some bugs revealed by Paul Dietz' test suite:
4787 ** NIL is now allowed as a structure slot name.
4788 ** Arbitrary numbers, not just REALs, are allowed in certain
4789 circumstances in LOOP for-as-arithmetic clauses.
4790 ** Multiple class redefinitions before slot access no longer
4791 causes a type error.
4792 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4793 association between the name and a class.
4794 ** Generic functions with non-standard method-combination and over
4795 five methods all of which return constants no longer return NIL
4796 after the first few invocations. (thanks to Gerd Moellmann)
4797 ** CALL-NEXT-METHOD with no arguments now passes the original
4798 values of the arguments, even in the presence of assignment.
4799 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4801 ** DISASSEMBLE works with closures and funcallable instances.
4802 ** ADD-METHOD now returns the generic function, not the new method.
4803 ** FIND-METHOD signals an error if the lengths of the specializers
4804 is incompatible with the generic function, even if the ERRORP
4806 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4807 which its argument is a member.
4808 ** DEFCLASS only redefines the class named by its class-name
4809 argument if that name is the proper name of the class;
4810 otherwise, it creates a new class.
4811 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4812 of the UNBOUND-SLOT condition to the name of the slot.
4813 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4814 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4815 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4816 SLOT-MAKUNBOUND in the specified fashion.
4818 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4819 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4820 cross-compilation host. As a consequence, we can now bootstrap our
4821 way up to SBCL starting with a bare gcc toolchain and human-readable
4822 source code (first the source to CLISP, then the source to SBCL).
4823 * A contributed module containing a partial implementation of the
4824 simple-streams interface has been included. (thanks to Rudi
4826 * A contributed module implementing the RFC1321 Message Digest
4827 Algorithm, known as MD5, has been included.
4828 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4829 no longer has any effect, as the code controlled by this feature
4830 has been deleted. (As far as we know, no-one has ever built using
4831 this feature, and its semantics were confused in any case).
4832 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4833 work on conditions (as required by the ANSI specification),
4834 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4835 expected behaviour on conditions. Users should note, however,
4836 that such behaviour is not required by the ANSI specification,
4837 and so use of this behaviour may render their code unportable.
4838 * fixed some bugs revealed by Paul Dietz' test suite:
4839 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4841 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4842 ** SXHASH on condition objects no longer returns NIL.
4843 ** :ALLOCATION :CLASS slots are better treated; their values are
4844 updated on class redefinition, and initforms inherited from
4845 superclasses are applied.
4846 ** REMOVE-METHOD returns its generic function argument even when
4847 no method was removed.
4848 ** SHARED-INITIALIZE now initializes the values of the requested
4849 slots, including those with :ALLOCATION :CLASS.
4850 ** ALLOCATE-INSTANCE now works on structure classes defined via
4851 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4853 ** SLOT-EXISTS-P now works on conditions, as well as structures
4855 ** MAKE-LOAD-FORM now has the required methods on
4856 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4857 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4858 keyword, and now implements the SLOT-NAMES argument.
4859 ** methods with &OPTIONAL arguments no longer allow too many
4860 arguments to be passed in the call without error.
4861 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4862 option is consistent with the required arguments of the generic
4863 function lambda list.
4864 * bug fix: REQUIRE accepts a string designator. (Thanks to
4866 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4867 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4868 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4869 * bug fix: The compiler now checks for duplicated variables in macro
4871 * bug fix: SETQ on globals returns the correct value.
4872 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4873 not a COMPILER-ERROR (followed by some other strange error on
4874 choosing the CONTINUE restart).
4875 * bug fix: make.sh and friends are now more consistent in the way that
4876 they look for GNU "make".
4878 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4879 * experimental native threads support (on x86 Linux >=2.4 only).
4880 This is not compiled in by default: you need to add :SB-THREAD to
4881 the target features. See the "Beyond ANSI" chapter of the manual
4883 * fix for longstanding nonANSIism: The old distinction between
4884 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4885 The return value from CL:FIND-CLASS is now a CLOS class, and
4886 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4887 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4888 * An interface to the MetaObject Protocol, as described in Kiczales,
4889 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4890 MIT Press, 1991, is available from the SB-MOP package.
4891 * incompatible change: the SB-PCL package should now be considered
4892 a private implementation detail, and no longer a semi-private MOP
4894 * minor incompatible change: due to rearrangement for threads, the
4895 control stack and binding stack are now allocated at arbitrary
4896 addresses instead of being hardcoded per-port. Users affected by
4897 this probably have to be doing advanced things with shared
4898 libraries, and will know who they are.
4899 * minor incompatible change: Previously, all --eval forms used were
4900 processed with READ before any of them were processed with EVAL.
4901 Now each --eval form is processed with both READ and EVAL before
4902 the next --eval form is processed. (Thus package operations like
4903 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4904 work as the user might reasonably expect.)
4905 * minor incompatible change: *STANDARD-INPUT* is now only an
4906 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4908 * minor incompatible change: Y-OR-N-P is now character-oriented,
4909 not line oriented. Also, YES-OR-NO-P now works without errors.
4910 (thanks to Antonio Martinez)
4911 * sb-aclrepl module improvements: an integrated inspector, added
4912 repl features, and a bug fix to :trace command.
4913 * Known functions, which cannot be open coded by the backend, are
4914 considered to be able to check types of their arguments. (fixing
4915 a bug report by Nathan J. Froyd)
4916 * fixed a bug in computing method discriminating functions: It is
4917 now possible to define methods specialized on classes which have
4918 forward-referenced superclasses. (thanks to Gerd Moellmann)
4919 * fixed evaluation order in optional entries (reported by Gilbert
4921 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4922 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4923 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4924 required-by-AMOP NAME argument, as well as CLASS and
4925 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4926 * fixed bug 20: DEFMETHOD can define methods using names that are
4927 not the proper names of classes to designate class specializers.
4928 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4929 Unix file descriptors, instead of blowing up. (thanks to Antonio
4931 * Garbage collection refactoring: user-visible change is that a
4932 call to the GC function during WITHOUT-GCING will not do garbage
4933 collection until the end of the WITHOUT-GCING. If you were doing
4934 this you were probably losing anyway.
4935 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4936 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4937 TYPEP the latter but not the former.
4938 * The compiler issues a full WARNING for calls to undefined functions
4939 with names from the CL package.
4940 * MAP-INTO for a vector destination is open coded. (reported by
4941 Brian Downing on c.l.l)
4942 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4943 documentation string.
4944 * fixed some bugs revealed by Paul Dietz' test suite:
4945 ** COPY-ALIST now signals an error if its argument is a dotted
4947 ** Condition slots are now accessed more correctly in the presence
4948 of multiple initargs for a given slot.
4949 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4950 exclude restarts of the same name associated with a different
4952 ** DEFCLASS of forward-referenced classes with another
4953 forward-referenced class in the superclasses list no longer
4955 ** Condition slots are now initialized once each, not multiple
4956 times. (thanks to Gerd Moellmann)
4957 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4959 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4960 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4961 arguments contain duplicated elements.
4962 ** RESTART-CASE understands local macros.
4963 ** RESTART-CASE associates exactly its own restarts with a condition.
4964 ** ENDP in safe mode checks its argument to be of type LIST.
4965 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4966 in question is unbound.
4967 ** Optimized MAKE-INSTANCE functions no longer cause internal
4968 assertion failures in the presence of duplicate initargs.
4969 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4970 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4971 propagated even in the ctor optimized implementation of
4973 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4975 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4976 * a better implementation of SXHASH on (simple) bit vectors,
4977 measured both in execution speed and in distribution of results
4978 over the positive fixnums, has been installed. Likewise, a better
4979 implementation of EQUAL for simple bit vectors is now available.
4980 * fixed CEILING optimization for a divisor of form 2^k.
4981 * fixed bug 240 (emitting extra style warnings "using the lexical
4982 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4983 by Antonio Martinez)
4984 * fixed SXHASH, giving different results for NIL depending on type
4985 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4986 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4987 variable. (found by Rolf Wester)
4988 * SBCL does not ignore type declarations for special
4989 variables. (reported by rif on c.l.l 2003-03-05)
4990 * some bug fixes in contrib/sb-aclrepl/
4991 * fixed some bugs revealed by Paul Dietz' test suite:
4992 ** a bug in the CONS type specifier, whereby the CAR and CDR
4993 types got intertwined, has been fixed;
4994 ** the type system is now able to reason about the interaction
4995 between INTEGER and RATIO types more completely;
4996 ** APPEND, [N]REVERSE and NRECONC check that those their
4997 arguments, which must be proper lists, are really so;
4998 ** An array specialized to be unable to hold elements has been
4999 implemented, as required -- yes, really -- by ANSI;
5000 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5001 on malformed property lists;
5003 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5004 * incompatible packaging change: in line with Unix convention,
5005 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5006 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5007 * REQUIRE and PROVIDE are now optionally capable of doing something
5008 useful. See the documentation string for REQUIRE.
5009 * infrastructure for a managed SBCL contrib system: contributed
5010 modules in this release include:
5011 ** the ASDF system definition facility;
5012 ** an interface to the BSD Sockets API;
5013 ** an ACL-like convenience interface to the repl;
5014 (thanks to Kevin Rosenberg)
5015 ** an implementation of ROTATE-BYTE, with efficient implementation
5017 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5018 gives a closer approximation to the right answer than previously.
5019 (thanks to Raymond Toy)
5020 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5021 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5022 optional environment arguments, as required by ANSI.
5023 * fixed bugs in other functions taking environment objects, allowing
5024 calls with an explicit NIL environment argument to be compiled
5026 * fixed bug 228: primary return values from
5027 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5028 COMPILE or FUNCTION.
5029 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5030 :TYPE will no longer signal errors on innocuous objects.
5031 * fixed bug 231b: SETQ is better at respecting type declarations in
5032 the lexical environment.
5033 * fixed a bug in DEFCLASS: classes named by symbols with no or
5034 unprintable packages can now be defined.
5035 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5036 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5037 * fixed compiler failure related to checking types of functions.
5038 (reported by Robert E. Brown)
5039 * the compiler is now much more consistent in its error-checking
5040 treatment of bounding index arguments to sequence functions: in
5041 (SAFETY 3) code, errors will be signalled in almost all cases if
5042 invalid sequence bounding indices are passed to functions defined
5043 by ANSI to operate on sequences.
5044 * fixed a bug in the build procedure: documentation of SBCL-specific
5045 packages is now preserved and available in the final Lisp image.
5046 * lifted FDEFINITION lookup out of loops in the implementation of
5047 many list operations. (thanks to Robert E. Brown)
5048 * fixed a bug in the reader: the #n# reader macro now works for
5049 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5050 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5051 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5052 E. Brown and Tony Martinez respectively)
5053 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5054 SLOT-BOUNDP: in particular, it is now able to optimize them much
5055 better, and is now not vulnerable to having packages renamed.
5056 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5057 always called when a slot is not present in an instance. (thanks
5059 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5060 longer signal an error on unreading a character following EOF on
5061 the previous constituent stream. (thanks to Tony Martinez)
5062 * fixed some bugs revealed by Paul Dietz' test suite:
5063 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5064 not just nonnegative fixnums;
5065 ** the logical bit-array operators such as BIT-AND now accept an
5066 explicit NIL for their "opt-arg" argument (to indicate a
5067 freshly-consed result bit-array);
5068 ** ELT now signals an error on an invalid sequence index in safe
5070 ** the type system is now cleverer about negations of numeric
5071 types, and consequently understands the BIGNUM and RATIO types
5073 ** the type system is now cleverer about the interaction between
5074 INTEGER and RATIO types: while bugs still remain, many more
5075 cases are accurately computed;
5076 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5077 if it is in the last clause;
5078 ** CONSTANTLY now correctly returns a side-effect-free function in
5080 ** DECLARE is no longer treated as a special-operator; in
5081 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5082 * incremented fasl file version number due to the change in the
5083 DEFSTRUCT-SLOT-DESCRIPTION structure.
5085 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5086 * minor incompatible change: code processed by the "interpreter" or
5087 EVAL now has a compilation optimization policy of (DEBUG 2)
5088 (changed from (DEBUG 1)) to improve debuggability of interactive
5089 development, and to allow the use of the debug RETURN command in
5091 * an experimental implementation of the RETURN command for the
5092 debugger has been included. (thanks to Frederik Kuivinen)
5093 * fixed bug 62: constraints were not propagated into a loop.
5094 * fixed bug in embedded calls of SORT (reported and investigated by
5096 * fixed some bugs revealed by Paul Dietz' test suite:
5097 ** printing and reading of arrays with some dimensions having
5098 length 0 (thanks to Gerd Moellmann);
5099 ** BOA constructor with &AUX argument without a default value does
5100 not cause a type error;
5101 ** CONSTANTP now returns true for all self-evaluating objects.
5103 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5104 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5105 accessors that are related by inheritance, as specified in the
5106 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5107 Valtteri Vuorikoski)
5108 * The compiler is now able to inline functions that were defined in
5109 a complex lexical environment (e.g. inside a MACROLET).
5110 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5112 * Support for the upcoming FreeBSD-5.0 release has been included.
5113 (thanks to Dag-Erling Smorgrav)
5114 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5115 effect when it is not in a toplevel context.
5116 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5117 stand a better chance of being correct. (thanks to Gerd
5119 * fixed bug in COERCE, which now signals an error on coercing a
5120 rational to a bounded real type which excludes the expected
5122 * The compiler is now able to derive types more accurately from the
5123 COERCE and COMPILE functions.
5124 * fixed bug 223: functional binding is considered to be constant
5125 only for symbols in the CL package.
5126 * fixed bug 231: SETQ did not check the type of a variable being set
5127 (reported by Robert E. Brown)
5128 * A new optimization for MAKE-INSTANCE has been included, fixing
5129 various bugs (including relating to :ALLOCATION :CLASS slots and
5130 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5132 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5133 ** As required by ANSI, LOOP now disallows anonymous collection
5134 clauses such as COLLECT I in conjunction with aggregate boolean
5135 clauses such as THEREIS (= I 1);
5136 ** LOOP now signals an error when any variable is reused in the
5137 same loop (including the potentially useful construct analogous
5138 to WITH A = 1 WITH A = (1+ A);
5139 ** IT is only a special loop symbol within the first clause of a
5140 conditional loop clause;
5141 ** LOOP with a typed iteration variable over a hashtable now
5142 signals a type error iff it should.
5143 * fixed some other bugs revealed by Paul Dietz' test suite:
5144 ** FILE-STREAM now names the class previously known as FD-STREAM;
5145 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5146 argument) no longer signals an error;
5147 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5148 of the slot symbol, rather than using the current package
5149 ((:CONC-NAME "") continues to intern the slot's name in the
5151 * incremented fasl file version number, because of the incompatible
5152 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5153 of the new implementation of DEFINE-COMPILER-MACRO.
5155 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5156 * Support for building SBCL for MIPS platforms running in
5157 little-endian mode has now been checked in, and basic
5158 functionality on said platforms verified.
5159 * minor incompatible change: PCL now records the pathname of a file
5160 in which methods and the like are defined, rather than its
5162 * minor incompatible change: TRUENAME now considers the truename of
5163 a file naming a directory to be the pathname with :DIRECTORY
5164 component indicating that directory.
5165 * minor incompatible change: a NAMED clause in the extended form of
5166 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5167 reason for the previous behaviour is unclear.
5168 * more systematization and improvement of CLOS and MOP conformance
5169 in PCL (thanks to Gerd Moellman and Pierre Mai):
5170 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5172 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5173 primary methods with no specializers;
5174 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5176 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5177 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5178 FORWARD-REFERENCED-CLASSes; error reporting on
5179 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5181 ** SXHASH on CLOS instances now uses a slot internal to the
5182 instance to return different numbers on distinct instances,
5183 while preserving the same return value through invocations of
5185 ** DEFMETHOD signals errors when methods with longer incongruent
5186 lambda lists are added to generic functions;
5187 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5188 CLASS, as specified in AMOP;
5189 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5190 on the order returned by the primary method for classes of
5191 class STANDARD-CLASS;
5192 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5193 * fixed some bugs shown by Paul Dietz' test suite:
5194 ** DOLIST puts its body in TAGBODY;
5195 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5197 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5198 value producing form;
5199 ** if more variables are given to PROGV than values, extra
5200 variables are bound and made to have no value;
5201 ** NSUBSTITUTE on list arguments gets the right answer with
5203 ** ELT signals an error of type TYPE-ERROR when the index argument
5204 is not a valid sequence index;
5205 ** LOOP signals (at macroexpansion time) an error of type
5206 PROGRAM-ERROR when duplicate variable names are found;
5207 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5208 ** FUNCALL of special-operators now cause an error of type
5210 ** PSETQ now works as required in the presence of side-effecting
5211 symbol-macro places;
5212 ** NCONC accepts any object as its last argument;
5213 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5215 ** loop-for-as-package does not require a package to be explicitely
5217 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5219 * fixed bug 166: compiler preserves "there is a way to go"
5220 invariant when deleting code.
5221 * fixed bug 172: macro lambda lists with required arguments after
5222 &REST arguments now cause an error to be signalled. (thanks to
5224 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5225 bug. (thanks to Matthew Danish)
5226 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5228 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5229 arguments are lexically rebound. (thanks to Gerd Moellmann and
5231 * fixed bug 194: error messages are now more informative when there
5232 is no primary method applicable in a call to a generic
5233 function. (thanks to Gerd Moellmann)
5234 * fixed bug in command line argument checking (thanks to Julian
5236 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5237 (thanks to Matthew Danish)
5238 * incremented fasl file version number, because of the
5239 SXHASH-related changes in the layout of CLOS data structures
5241 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5242 * minor incompatible change: The runtime (the Unix executable named
5243 "sbcl") is now much pickier about the .core files it will load.
5244 Essentially it now requires .core files to descend from the same
5245 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5246 as the runtime does. (The intent is to prevent the crashes which
5247 can occur, and which can even be reported as mysterious failures,
5248 when people patch the sources or change the build parameters
5249 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5250 sbcl and .core files.)
5251 * fixed bug: VALUES-LIST is no longer optimized away.
5252 * fixed bug 142: The FFI conversion of C string values to Lisp
5253 string values no longer conses excessively. (thanks to Nathan
5254 Froyd porting Raymond Toy's fix to CMU CL)
5255 * began to systematize and improve MOP conformance in PCL (thanks to
5256 Nathan Froyd, Gerd Moellman and Pierre Mai):
5257 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5259 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5260 ** FINALIZE-INHERITANCE is now called on class finalization;
5261 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5262 argument precedence order.
5263 * fixed bug 202: The compiler no longer fails on functions whose
5264 derived types contradict their declared type.
5265 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5266 so it can be non-toplevel.
5267 * The fasl file version number has changed (because of the new
5268 implementation of DEFMACRO).
5269 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5270 safe code, that any length requirement by their type-specifier
5271 argument is valid. The exceptions to this are described in bug
5273 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5274 functions now check the types of their inputs as required by ANSI.
5275 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5276 introduced symbol is DECLAREd to be SPECIAL.
5277 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5278 * fixed bug: :COUNT argument to sequence functions may be negative
5279 * fixed bug: body of DO-SYMBOLS may contain declarations
5280 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5281 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5282 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5283 symbol macro only once
5284 * fixed printing of call frame when argument list is unavailable
5285 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5286 * compiler no longer signals WARNING on unknown keyword
5289 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5290 * A beta-quality port to the mips architecture running Linux,
5291 based on the old CMUCL backend, has been made. It has been tested
5292 on a big-endian kernel, and works sufficiently well to be able to
5293 rebuild itself; it has not been tested in little-endian mode.
5294 * fixed an inconsistency between gencgc.c and purify.c which made
5295 dumping/loading .core files unreliable
5296 * fixed bug 120a: The compiler now deals correctly with IFs where
5297 the consequent is the same as the alternative, instead of
5298 misderiving the return type. (thanks to Alexey Dejneka)
5299 * fixed bug 113: Logical pathnames are now dumpable (the logical
5300 host is resolved at load-time, throwing an error if it is not
5302 * fixed bug 174: FORMAT's error message is slightly clearer when a
5303 non-printing character is used in a format directive.
5304 * fixed several bugs in compiler checking of type declarations, i.e.
5305 violations of the Python "declarations are assertions" principle
5306 (thanks to Alexey Dejneka)
5307 * fixed several bugs in PCL's error checking (thanks to Gerd
5309 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5311 * fixed bug in compilation of functions as first class values
5312 (thanks to Antonio Martinez-Shotton)
5313 * The compiler's handling TYPE-ERRORs which it can prove will
5314 inevitably happen at runtime has been cleaned up and corrected
5315 in several ways. (thanks to Alexey Dejneka)
5316 * improved argument type checking for various basic arithmetic
5317 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5318 lavished on them in the past that they can be compiled in many
5319 ways in different special cases
5320 * fixed bug 181: compiler checks validity of user supplied type
5322 * cleaned up code flushing in optimization: Function calls which
5323 should signal errors for safety purposes (e.g. which ANSI says
5324 should signal errors when their arguments are of incorrect type)
5325 are no longer optimized away.
5326 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5327 * incremented fasl file version number, because changes in the
5328 implementation of sequence functions like COERCE caused
5329 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5330 in old inline expansions) to become undefined. (Actually these
5331 changes were later undone, so we might very well be binary
5332 compatible with 0.7.7 after all, but leaving the version number
5333 incremented seemed like the simplest and most conservative
5336 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5337 * An alpha-quality port to the parisc architecture running Linux,
5338 based on the old CMUCL backend, has been made. This, even more so
5339 than the other backends, should be considered still a work in
5340 progress; known problems include that the Linux kernel in 64-bit
5341 mode does not propagate the correct sigcontext structure to
5342 userspace, and consequently SBCL on a parisc64 kernel will not
5344 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5345 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5346 suppressed.) Also now that the compiler is looking at declarations
5347 in the environment, it checks optimization declarations as well,
5348 and suppresses inlining when (> DEBUG SPEED).
5349 * More fixes have been made to treatment of floating point exception
5350 treatment and other Unix signals. In particular, floating point
5351 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5352 * The detection and handling of control stack exhaustion (infinite
5353 or very deeply nested recursion) has changed. Stack exhaustion
5354 detection is now done by write-protecting pages at the OS level
5355 and applies at all optimization settings; when found, a
5356 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5357 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5358 be caught using IGNORE-ERRORS.
5359 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5360 correctly when transforming recursive LABELS functions to LETs.
5361 (thanks to Alexey Dejneka)
5362 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5363 that are names of constants or global variables.
5364 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5365 alien routines with docstrings.
5366 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5367 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5369 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5370 (thanks to Eric Marsden)
5371 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5372 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5373 * Bug fix: The SPARC backend can now compile functions involving
5374 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5375 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5376 to a functions expecting a PATHNAME-DESIGNATOR.
5377 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5378 lambda lists. (thanks to Alexey Dejneka)
5379 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5380 functions so that EXPORTing the name of the class doesn't cause
5381 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5382 to Antonio Martinez for reporting this)
5383 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5384 constant-folded without failing an assertion. (thanks to Einar
5385 Floystad Dorum for reporting this)
5386 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5387 types are now dealt with more correctly by the compiler.
5388 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5389 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5390 behaviour analogous to RENAME-FILE. This puts its behaviour more
5391 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5393 * The fasl file version number has changed again. (because of the
5394 bug fix involving the names of PCL MAKE-INSTANCE functions)
5396 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5397 * bug fix: Floating point exceptions are treated much more
5398 consistently on the x86/Linux and PPC/Linux platforms.
5399 * Array initialization with :INITIAL-ELEMENT is now much faster for
5400 cases when the compiler cannot open code the array creation, but
5401 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5402 array accesses have also seen a speed increase.
5403 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5404 specified. (This was at the root of some bad interactions between
5405 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5407 * bug fix: Internal error arguments for undefined functions are now
5408 computed correctly on the PPC/Linux platform.
5409 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5410 Raymond Toy's patch for CMU CL)
5411 * Support for the Solaris 9 operating environment has been included
5412 (thanks to Daniel Merritt)
5413 * A very ugly but hopefully complete draft of the missing FFI chapter
5414 of the manual has been created by reformatting the corresponding
5415 CMU CL manual chapter into (currently very ugly and incoherent)
5416 DocBook and bringing it up to date for SBCL behavior. Thus, the
5417 manual is now essentially complete, at least by my extreme
5418 once-and-only-once standards, whereby it's acceptable to refer to
5419 the doc strings of SB-EXT functions as the primary documentation.
5420 * The fasl file version number has changed again, due to cleanup of
5421 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5422 is no longer a static symbol.)
5424 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5425 * SBCL now builds with OpenMCL (version 0.12) as the
5426 cross-compilation host; also, more progress has been made toward
5427 bootstrapping under CLISP.
5428 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5430 * bug 158 fixed: The compiler can now deal with integer loop
5431 increments different from 1; fixing this turned out also to fix
5433 * bug 169 fixed: no more bogus warnings about using lexical bindings
5434 despite the presence of perfectly good SPECIAL declarations (thanks
5435 to David Lichteblau)
5436 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5437 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5438 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5440 * bug 180 fixed: Method combination specifications no longer ignore
5441 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5442 * bug fix: Structure type predicate functions now check their argument
5443 count as they should.
5444 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5445 correctly. (thanks to Pierre Mai)
5446 * minor incompatible change: The --noprogrammer option is deprecated
5447 in favor of the new --disable-debugger option, which is very similar.
5448 (The major difference is that it takes effect at a slightly different
5449 time at startup, causing handling of errors in --sysinit and
5450 --userinit files will be affected differently.) The
5451 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5452 been added to allow this functionality to be controlled from ordinary
5453 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5454 maintainers, who might want to run non-interactive scripts to
5455 build SBCL cores which will later be used interactively.)
5456 * minor incompatible change: The LOAD function no longer, when given
5457 a wild pathname to load, loads all files matching that pathname.
5458 Instead, an error of type FILE-ERROR is signalled.
5460 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5461 * bug 147 fixed: The compiler preserves its block link/count
5462 invariants more correctly now so that it doesn't crash. (thanks
5464 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5466 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5467 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5468 no-value-for-this-character as NIL (as specified by ANSI).
5469 * HOST-NAMESTRING on physical pathnames now returns a string that is
5470 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5471 (thanks to Christophe Rhodes)
5472 * The Alpha port handles icache flushing more correctly. (thanks to
5474 * More progress has been made toward bootstrapping under CLISP. (thanks
5475 to Christophe Rhodes)
5476 * The fasl file format has changed again, because dynamic loading
5477 on OpenBSD (which has non-ELF object files) motivated some cleanups
5478 in the way that foreign symbols are transformed and passed around.
5479 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5480 is no longer treated as whitespace by the reader, but instead as
5481 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5482 |A
\7fB|, instead of A as it used to.
5484 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5485 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5486 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5487 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5488 this as of 0.7.1.45, but was left out of the previous news section
5489 (thanks to Dan Barlow)
5490 * SBCL now runs on the Solaris operating system on SPARC architectures
5491 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5492 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5493 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5494 * SPARC backend cleanups, allowing builds of cores optimized for V8
5495 and V9 SPARCS, and also emission of code targeted to a particular
5496 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5498 * SBCL is closer to bootstrapping under CLISP, thanks to various
5499 fixes by Christophe Rhodes.
5500 * The fasl file format has changed again, to allow the compiler's
5501 INFO database to support symbol macros.
5502 * The user manual (in doc/) is formatted into HTML more nicely.
5503 (thanks to coreythomas)
5504 * The system is smarter about SUBTYPEP relationships, especially
5505 those involving NOT types (including types such as ATOM which are
5506 represented internally using NOT types). Thus SUBTYPEP is less
5507 likely to return (VALUES NIL NIL) in general, and in particular
5508 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5510 * The fasl file format has changed again, because the internal
5511 representation of types now includes a new slot to support the new
5512 SUBTYPEP-of-NOT-types logic.
5513 * (not a change in the main branch of SBCL, but a related prototype
5514 which can hopefully be merged into the main branch of SBCL in the
5515 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5516 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5517 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5518 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5519 dispatch macro character combinations. (thanks to Alexey Dejneka)
5520 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5521 that superficially look like logical namestrings correctly.
5522 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5524 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5525 default supplied-p) for &optional and &key arguments. (thanks to
5528 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5529 * incompatible change: The compiler is now less aggressive about
5530 tail call optimization, doing it only when (> SPACE DEBUG) or
5531 (> SPEED DEBUG). (This is an incompatible change because there are
5532 programs which relied on the old CMU-CL-style behavior to optimize
5533 away their unbounded recursion which will now die of stack overflow.)
5534 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5535 for non-GENCGC systems has been increased to 20M (since that
5536 seems much closer to the likely performance optimum for modern
5537 systems than the old 4M value was)
5538 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5539 and *DEBUG-PRINT-LEVEL*
5540 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5541 of CMU CL's support for SPARC, and various endianness and other
5542 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5543 * new syntactic sugar for the Unix command line: --load foo.bar is now
5544 an alternate notation for --eval '(load "foo.bar")'.
5546 ** The system now detects stack overflow and handles it gracefully,
5547 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5548 optimization settings. (This is a good thing in general, and
5549 its introduction in this version should be particularly timely
5550 for anyone whose code fails because of suppression of tail
5552 ** The system now hunts for the C variable "environ" in a more
5553 devious way, to avoid segfaults when the C library version differs
5554 between compile time and run time. (thanks to Christophe Rhodes)
5555 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5556 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5557 ** The compiler no longer issues bogus style warnings for undefined
5558 classes in the same source file as the DEFCLASSes which defined
5559 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5561 ** fixes in CONDITION class precedence list for undefined function
5562 errors (thanks to Alexei Dejneka)
5563 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5564 correctly. (thanks to Dan Barlow)
5565 ** portability fixes aiming at bootstrapping under CLISP (thanks
5566 to Dave McDonald and Christophe Rhodes)
5567 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5568 ** fixes in type translation and and type inference (thanks to
5570 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5571 ** various fixes in the new ports (thanks to Dan Barlow)
5572 * several changes related to debugging:
5573 ** suppression of tail recursion, as noted above
5574 ** stack overflow detection, as noted above
5575 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5576 is now the default. (For some time encapsulation has been more
5577 reliable than the breakpoint-based :ENCAPSULATE NIL
5578 implementation, at least on X86 systems; and I just noticed that
5579 encapsulation also seems closer to the spirit of the ANSI
5582 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5584 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5585 up properly again. (There was a packaging bug in 0.7.0 which
5586 left their definitions in SB-SYS::LOAD-FOREIGN and
5587 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5588 vital for most things which interface to C-level interfaces,
5589 like extensions working with sockets or databases or
5590 Perl-compatible regexes or whatever, and the need to fix
5591 this bug is the main reason that 0.7.1 was released so
5593 ** DEFGENERIC is now choosier about the methods it redefines, so that
5594 reLOADing a previously-LOADed file containing DEFGENERICs does
5595 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5596 cycle now works as it should. (thanks to Alexey Dejneka)
5597 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5598 fixed by Christophe Rhodes. (He actually submitted this patch
5599 months ago, and I delayed until after 0.7.0.)
5600 ** Bug 111 (internal compiler confusion about runtime checks on
5601 FUNCTION types) was fixed by Alexey Dejneka.
5602 * Some internal cleanups (getting rid of variables which aren't
5603 needed now that the byte interpreter is gone) caused the fasl
5604 file format number to change again.
5606 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5607 * major incompatible change: The default fasl file extension, i.e. the
5608 default extension for files produced by COMPILE-FILE, has changed
5609 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5611 ** There are many changes in the implementation of the compiler.
5612 SBCL is now essentially a compiler-only implementation of ANSI
5613 Common Lisp. EVAL still "interprets" a few special cases, but
5614 almost all the interesting cases are handled by creating
5615 a LAMBDA expression, calling COMPILE on it, then calling
5616 FUNCALL on the result.
5617 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5618 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5619 Since the code is newer, there might still be some new bugs
5620 (though not as many as before Martin Atzmueller's fixes:-). But
5621 the new code is substantially simpler and clearer, and hopefully
5622 any remaining bugs will be simpler, less fundamental, and more
5623 fixable then the bugs in the old code.
5624 ** The revised compiler is still a little unsteady on its feet.
5626 *** The debugging information it produces (particularly the names
5627 of FUNCTION objects) is sometimes much less useful than what
5628 the old compiler produced.
5629 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5630 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5631 within a MACROLET) has been temporarily weakened.
5632 ** There are new compiler optimizations for various functions:
5633 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5634 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5635 *** the math functions TRUNCATE, FLOOR, and CEILING
5636 *** the function-of-all-trades COERCE
5637 Mostly these should be transparent, but there's one
5638 potentially-annoying problem (bug 117): when the compiler
5639 inline-expands a function and does type analysis on the result,
5640 it can create control paths which have type mismatches, and
5641 when it can't prove that those control paths aren't taken,
5642 it will issue WARNINGs about the type mismatches. This is
5643 a particular problem in practice for the new sequence functions.
5644 It's not clear how this should be fixed, and for now, a
5645 workaround is given in the entry for 117 in the BUGS file.
5646 ** (Because of the interaction between the two previous items --
5647 occasional inlining problems and new inline expansions -- some
5648 of the new sequence function optimizations won't really kick in
5649 completely until debugging information, and then inlining, are
5650 straightened out in some future version.)
5651 * minor incompatible changes:
5652 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5653 DIRECTORY no longer implicitly promotes NIL slots of its
5654 pathname argument to :WILD. In particular, when you ask for the
5655 contents of a directory (which you used to be able to do without
5656 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5657 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5658 ** changes in behavior that ANSI explicitly defines to be
5659 implementation dependent:
5660 *** The new compiler-only implementation still conforms with ANSI,
5661 but acts a little different than before. Besides the obvious
5662 changes in performance tradeoffs (that the cost per form passed
5663 to EVAL has gone up, and the cost per form executed by EVAL
5664 has gone down), the behavior of the system changes a little
5665 because there are no longer any interpreted function objects.
5666 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5667 e.g. doing COMPILE on the output of interactive DEFUN is
5669 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5671 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5672 has changed from (:CL) to NIL.
5673 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5674 e.g. #\Newline and #\Tab, don't have names specified in the
5675 ANSI Common Lisp standard, is now based on their ASCII symbolic
5676 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5677 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5678 are no longer used for output.
5679 ** changes in internal implementation constants:
5680 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5681 4 million. (If your application spends a lot of time GCing and
5682 you have a lot of RAM, you might want to experiment with
5683 increasing it even more.)
5684 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5685 However, almost all old code should still continue to work without
5686 immediate update, as SB-C-CALL is now a (deprecated) nickname
5688 ** Old operator names in the style DEF-FOO are now deprecated in
5689 favor of new corresponding names DEFINE-FOO, for consistency with
5690 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5691 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5692 internal symbols, but a few supported extensions like
5693 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5694 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5695 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5696 etc. as you get deeper into recursive calls to the debugger
5697 command loop, instead of the old "5]", "5]]", "5]]]"
5698 sequence. (I was motivated to do this when squabbles between
5699 ILISP and SBCL left me very deeply nested in the debugger. In the
5700 short term, this change will probably provoke more ILISP/SBCL
5701 squabbles, but hopefully it will be an improvement in the long run.)
5702 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5703 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5704 function, since declaiming return types involving aliens is
5705 (1) annoyingly messy to do by hand and (2) vital to efficient
5706 compilation of code which calls such functions.
5707 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5708 longer reexported by the SB-EXT package. They're solely useful
5709 for alien code, so it seems more logical that you should get
5710 them from the SB-ALIEN package, not in SB-EXT.
5711 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5712 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5713 features. Instead, the code that they used to control is always
5714 built into the system.
5715 * many other bug fixes
5716 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5717 advantage of the new EVAL-WHEN stuff and to clean them up in
5718 general, and they are now more ANSI-compliant in a number of
5719 ways. Martin Atzmueller is responsible for a lot of this.
5720 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5722 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5723 *** correct ERROR type for various file operations
5724 *** some fixes for Lisp streams
5725 *** DEFMETHOD syntax checking
5726 *** changing old weird representation of debug information as
5727 strings (which, among their other deficiencies, don't transform
5728 correctly when you rename packages, and don't change their
5729 print representation when you change things like *PACKAGE*
5730 and *PRINT-LENGTH*) to symbols and lists of symbols
5731 He also made several improvements and fixed several bugs in DESCRIBE.
5732 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5734 *** misbehavior of WRITE-STRING/WRITE-LINE
5735 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5736 and several other LOOP problems as well
5737 *** DIRECTORY when similar filenames are present
5738 *** DEFGENERIC with :METHOD options
5739 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5740 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5741 *** argument ordering in FIND with :TEST option
5742 *** mishandled package designator argument in APROPOS-LIST
5743 *** various problems in the backquote readmacro
5744 *** a bug in APROPOS
5745 *** probably some others that I'm not describing very well here,
5746 since the CVS log documents them by reference to sbcl-devel
5747 messages, and the SourceForge archives aren't working well.:-(
5748 ** Dan Barlow improved the Alpha port (and is making progress on the
5749 PPC port, for those of you who think different).
5750 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5751 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5752 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5753 continues to work on the SPARC port (for those of you in a position
5754 to look down upon our little PC-compatible boxes from a great height).
5755 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5756 and uses that copy, rather than the current dynamic value, when
5757 it's trying to decide whether to truncate output. Thus e.g.
5758 (let ((*print-lines* 50))
5759 (pprint-logical-block (stream nil)
5761 (let ((*print-lines* 8))
5762 (print (aref possiblybigthings i) stream)))))
5763 should now truncate the logical block only at 50 lines, instead of
5764 often truncating it at 8 lines, as it did before.
5765 * The doc/cmucl/ directory, containing old CMU CL documentation
5766 from the time of the fork, is no longer part of the base system.
5767 SourceForge has shut down its anonymous FTP service, and with it
5768 my original plan for distributing the old CMU CL documentation
5769 there. For now, if you need these files you can download an old
5770 SBCL source release and extract them from it.
5771 * The fasl file version number changed again, for dozens of reasons,
5772 some of which are apparent above.
5774 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5775 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5776 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5777 patch, so that DISASSEMBLE output is much nicer.
5778 * The code in the SB-PROFILE package now seems reasonably stable.
5779 I still haven't decided what the final interface should look like
5780 (I'd like PROFILE to interact cleanly with TRACE, since both
5781 facilities use function encapsulation) but if you have a need
5782 for profiling now, you can probably use it successfully with
5783 the current CMU-CL-style interface.
5784 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5785 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5786 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5787 link now returns the dangling link itself, and for similar
5788 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5789 link itself. (In these cases the old code signalled an error and
5790 looped endlessly, respectively.) Thus, DIRECTORY now works even
5791 in the presence of dangling and cyclic symbolic links.
5792 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5793 is now a supported extension again, since the consensus on
5794 sbcl-devel was that it can be useful for ordinary development
5795 work, not just for debugging SBCL itself.
5796 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5797 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5798 that currently-defined functions might be redefined later with
5799 different return types.
5800 * Hash tables can be printed readably, as inspired by CMU CL code
5801 of Eric Marsden and SBCL code of Martin Atzmueller.
5802 * better error handling in CLOS method combination, thanks to
5803 Martin Atzmueller porting Pierre Mai's CMU CL patches
5804 * more overflow fixes for >16Mbyte I/O buffers
5805 * A bug in READ has been fixed, so that now a single Ctrl-D
5806 character suffices to cause end-of-file on character streams.
5807 In particular, now you only need one Ctrl-D at the command
5808 line (not two) to exit SBCL.
5809 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5811 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5812 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5813 does the right thing.
5814 * The implementation of some type tests, especially for CONDITION
5815 types, is now tidier and maybe faster, due to CMU CL code
5816 originally by Douglas Crosher, ported by Martin Atzmueller.
5817 * Some math functions have been fixed, and there are new
5818 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5819 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5820 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5821 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5822 likely to be built into sbcl-0.7.0.)
5823 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5824 CL, ported to SBCL by Martin Atzmueller)
5825 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5826 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5827 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5828 * There's a new slam.sh hack to shorten the edit/compile/debug
5829 cycle for low-level changes to SBCL itself, and a new
5830 :SB-AFTER-XC-CORE target feature to control the generation of
5831 the after-xc.core file needed by slam.sh.
5832 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5833 COMPILE-FILE is no longer supported, so that now every function
5834 gets an entry point, so that block compilation looks a little
5835 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5836 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5837 returns the number of bytes consed since the system started,
5838 rather than the number consed since the first time the function
5839 was called. (The new definition parallels ANSI functions like
5840 CL:GET-INTERNAL-RUN-TIME.)
5841 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5842 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5843 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5844 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5845 * Fasl file version numbers are now independent of the target CPU,
5846 since historically most system changes which required version
5847 number changes have affected all CPUs equally. Similarly,
5848 the byte fasl file version is now equal to the ordinary
5851 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5852 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5853 is no longer recognized. I apologize for this, because it was
5854 listed in SB-EXT as a supported extension, but I found that
5855 its existing behavior was poorly specified, as well as incorrectly
5856 specified, and it looked like too much of a mess to straighten it
5857 out. I have enough on my hands trying to get ANSI stuff to work..
5858 * many patches ported from CMU CL by Martin Atzmueller, with
5859 half a dozen bug fixes in pretty-printing and the debugger, and
5860 half a dozen others elsewhere
5861 * fixed bug 13: Floating point infinities are now supported again.
5862 They might still be a little bit flaky, but thanks to bug reports
5863 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5864 as flaky as they were.
5865 * The --noprogrammer command line option is now supported. (Its
5866 behavior is slightly different in detail from what the old man
5867 page claimed it would do, but it's still appropriate under the
5868 same circumstances that the man page talks about.)
5869 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5870 are now supported, and enabled by default. Thus, the compiler can
5871 handle many floating point and complex operations much less
5872 inefficiently. (Thus e.g. you can implement a complex FFT
5874 * The compiler now detects type mismatches between DECLAIM FTYPE
5875 and DEFUN better, and implements CHECK-TYPE more correctly, and
5876 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5877 thanks to patches from Martin Atzmueller.
5878 * various fixes to make the cross-compiler more portable to
5879 ANSI-conforming-but-different cross-compilation hosts (notably
5880 Lispworks for Windows, following bug reports from Arthur Lemmens)
5881 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5882 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5883 fixed thanks to Pierre Mai's CMU CL patches.
5884 * fixes to keep the system from overflowing internal counters when
5885 it tries to use i/o buffers larger than 16M bytes
5886 * fixed bug 45a: Various internal functions required to support
5887 complex special functions have been merged from CMU CL sources.
5888 (When I was first setting up SBCL, I misunderstood a compile-time
5889 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5890 * improved support for type intersection and union, fixing bug 12
5891 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5892 more obscure bugs as well
5893 * some steps toward byte-compiling non-performance-critical
5894 parts of the system, courtesy of patches from Martin Atzmueller
5895 * Christophe Rhodes has made some debian packages of sbcl at
5896 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5897 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5898 stable, but are nonetheless usable. When he's ready, I'd be happy
5899 to add them to the SourceForge "File Releases" section. (And if
5900 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5901 * new fasl file format version number (because of changes in
5902 internal representation of (OR ..) types to accommodate the new
5903 support for (AND ..) types, among other things)
5905 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5906 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5908 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5910 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5911 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5912 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5913 * DESCRIBE now works on structure objects again.
5914 * Most function call argument type mismatches are now handled as
5915 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5916 know whether the function will be redefined before the call is
5917 executed. (The compiler could flag local calls with full WARNINGs,
5918 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5919 it doesn't keep track of enough information to know whether calls
5920 are local in this sense.)
5921 * Compiler output is now more verbose, with messages truncated
5922 later than before. (There should be some supported way for users
5923 to override the default verbosity, but I haven't decided how to
5924 provide it yet, so this behavior is still controlled by the internal
5925 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5926 src/compiler/ir1util.lisp.)
5927 * Fasl file format version numbers have increased again, because
5928 support for the Gray streams extension changes the layout of the
5929 system's STREAM objects.
5930 * The Gray subclassable streams extension now works, thanks to a
5931 patch from Martin Atzmueller.
5932 * The full LOAD-FOREIGN extension (not just the primitive
5933 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5934 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5935 but like most other programs, it defaults to copying the Unix
5936 environment from the original process instead of starting the
5937 new process in an empty environment.
5938 * Extensions which manipulate the Unix environment now support
5939 an :ENVIRONMENT keyword option which doesn't smash case or
5940 do other bad things. The CMU-CL-style :ENV option is retained
5941 for porting convenience.
5942 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5943 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5945 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5947 * A patch from Martin Atzmueller seems to have solved the SIGINT
5948 problem, and as far as we know, signal-handling now works cleanly.
5949 (If you find any new bugs, please report them!)
5950 * The system no longer defaults Lisp source file names to types
5951 ".l", ".cl", or ".lsp", but only to ".lisp".
5952 * The compiler no longer uses special default file extensions for
5953 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5954 seems to expect a single default extension for all compiled code,
5955 and there's no compelling reason to try to stretch the standard
5956 to allow two different extensions.) Instead, byte-compiled files
5957 default to the same extension as native-compiled files.
5958 * Fasl file format version numbers have increased again, because
5959 a rearrangement of internal implementation packages made some
5960 dumped symbols in old fasl files unreadable in new cores.
5961 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5962 many fewer weird special cases.
5963 * Bug #17 (differing COMPILE-FILE behavior between logical and
5964 physical pathnames) has been fixed, and some related misbehavior too,
5965 thanks to a patch from Martin Atzmueller.
5966 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5967 by Tim Moore, ported to SBCL by Martin Atzmueller.
5968 * Martin Atzmueller fixed several filesystem-related problems,
5969 including bug #36, in part by porting CMU CL patches, which were
5970 written in part by Paul Werkowski.
5971 * More compiler warnings in src/runtime/ are gone, thanks to
5972 more patches from Martin Atzmueller.
5973 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5976 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5978 * DESCRIBE now works on CONDITION objects.
5979 * The debugger now handles errors which arise when trying to print
5980 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5982 * The build system now uses an additional file, customize-target-features.lisp,
5983 to allow local modifications to the target *FEATURES* list. (The point of
5984 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5985 debugging features enabled, without having to worry about propagating it
5986 into everyone's system when I do a "cvs update".) When no
5987 customize-target-features.lisp file exists, the target *FEATURES* list
5988 should be constructed the same way as before.
5989 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5990 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5991 warn about behavior which is undefined under the ANSI spec. Note: This
5992 is specified by ANSI, but it's not very popular with programmers.
5993 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5994 macro in the SBCL sources for an example of a workaround which you
5995 might use to make portable ANSI-standard code which does what you want.
5996 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5997 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5998 when it's used as a non-toplevel form. (This is required in order
5999 to implement the DEFCONSTANT-EQX macro.)
6000 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6001 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6002 funny things, due to bugs in the implementation of EVAL-WHEN
6003 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6004 non-toplevel DEFCONSTANTs are uncommon.)
6005 * The core file version number and fasl file version number have been
6006 incremented, because the old noncompliant DEFCONSTANT behavior involved
6007 calling functions which no longer exist, and because I also took the
6008 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6009 * fixed bug 1 (error handling before read-eval-print loop starts), and
6010 redid debugger restarts and related debugger commands somewhat while
6012 ** The QUIT debugger command is gone, since it did something
6013 rather different than the SB-EXT:QUIT command, and since it never
6014 worked properly outside the main toplevel read/eval/print loop.
6015 Invoking the new TOPLEVEL restart provides the same functionality.
6016 ** The GO debugger command is also gone, since you can just invoke
6017 the CONTINUE restart directly instead.
6018 ** The TOP debugger command is also gone, since it's redundant with the
6019 FRAME 0 command, and since it interfered with abbreviations for the
6021 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6023 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6024 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6025 some porting work by Martin Atzmueller)
6026 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6027 with a boatload of patches which he ported to SBCL. Now that those
6029 ** The system tries to make sure that its low-priority messages
6030 are prefixed by semicolons, to help people who like to use
6031 syntax highlighting in their ILISP buffer. (This patch
6032 was originally due to Raymond Toy.)
6033 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6034 patches originally written by Raymond Toy.
6035 ** The compiler understands coercion between single-value and
6036 multiple-VALUES type expressions better, getting rid of some very
6037 weird behavior, thanks to patches originally by Robert MacLachlan
6038 and Douglas Crosher.
6039 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6040 lambda lists, thanks to a patch originally by Pierre Mai.
6041 ** The system no longer bogusly warns about "abbreviated type
6043 ** The compiler gets less confused by inlining and RETURN-FROM,
6044 thanks to some patches originally by Tim Moore.
6045 ** The system no longer hangs when dumping circular lists to fasl
6046 files, thanks to a patch originally from Douglas Crosher.
6047 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6048 undefined function error.
6049 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6050 in structure slot initforms) for now, documented workaround instead:-|
6051 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6052 * fixed bug 5: added stubs for various Gray stream functions called
6053 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6054 installed, at least appropriate type errors are generated
6055 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6056 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6057 consistently in DEFMETHOD forms.
6058 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6059 it doesn't seem to affect SBCL after all
6060 * The C runtime system now builds with better optimization and many
6061 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6063 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6065 * The system is now under CVS at SourceForge (instead of the
6066 CVS repository on my home machine).
6067 * The new signal handling code has been tweaked to treat register
6068 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6069 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6070 downstream, e.g. in debug-int.lisp, has implicit dependencies
6071 on the unsignedness of integer representation of machine words,
6072 and that caused the system to bomb out with infinite regress
6073 when trying to recover from type errors involving signed values,
6074 e.g. (BUTLAST '(1 2 3) -1).)
6075 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6076 (This was one of the bugs Peter Van Eynde reported back in July.)
6077 * The system now uses code inspired by Colin Walters' O(N)
6078 implementation of MAP (from the cmucl-imp@cons.org mailing
6079 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6080 inline the MAP operation, and there is more than one
6081 sequence argument to the MAP call (so that it can't just
6082 do ETYPECASE once and for all based on the type of the
6083 single sequence argument). (The old non-inline implementation
6084 of the general M-argument sequence-of-length-N case required
6085 O(M*N*N) time when any of the sequence arguments were LISTs.)
6086 * The QUIT :UNIX-CODE keyword argument has been renamed to
6087 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6088 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6090 * Raymond Wiker's patches to port dynamic loading from Linux to
6091 FreeBSD have been added.
6092 * The BUGS file is now more nearly up to date, thanks in large part
6093 to Martin Atzmueller's review of it.
6094 * The debugger now flushes standard output streams before it begins
6095 its output ("debugger invoked" and so forth).
6096 * The core version number and fasl file version number have both
6097 been incremented, because of incompatible changes in the layout
6099 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6100 used to not be called for a saved Lisp image.)
6101 * Martin Atzmueller's version of a patch to fix a compiler crash,
6102 as posted on sbcl-devel 13 September 2000, has been installed.
6103 * Instead of installing Martin Atzmueller's patch for the
6104 compiler transform for SUBSEQ, I deleted the compiler transform,
6105 and transforms for some similar consing operations.
6106 * A bug in signal handling which kept TRACE from working on OpenBSD
6108 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6109 away by constant folding
6110 * The system now defines its address space constants in one place
6111 (in the Lisp sources), and propagates them automatically elsewhere
6112 (through GENESIS and the sbcl.h file). Therefore, patching the
6113 address map is less unnecessarily tedious and error-prone. The
6114 Lisp names of address space constants have also been systematized.
6115 * CVS tags like dollar-Header-dollar have been removed from
6116 the sources, because they have never saved me trouble and
6117 they've been source of trouble working with patches and other
6118 diff-related operations.
6119 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6120 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6122 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6124 * The system has been ported to OpenBSD.
6125 * The system now compiles with a simple "sh make.sh" on the systems
6126 that it's supported on. I.e., now you no longer need to tweak
6127 text in the target-features.lisp-expr and symlinks in src/runtime/
6128 by hand, the make.sh takes care of it for you.
6129 * The system is no longer so grossly inefficient when compiling code
6130 involving vectors implemented as general (not simple) vectors (VECTOR T),
6131 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6132 which dares to use the various sequence functions on non-simple
6133 vectors, takes less of a performance hit.
6134 * There is now a primitive type predicate VECTOR-T-P
6135 to test for the (VECTOR T) type, so that e.g.
6136 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6137 can now be compiled with some semblance of efficiency. (The old code
6138 turned the type declaration into a full call to %TYPEP at runtime!)
6139 * AREF on (VECTOR T) is still not fast, since it's still compiled
6140 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6141 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6142 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6143 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6144 without making full calls to SUBTYPEP at runtime.
6145 (Some analogous efficiency issues for non-simple vectors specialized to
6146 element types other than T, or for non-simple multidimensional arrays,
6147 have not been addressed. They could almost certainly be handled the
6148 same way if anyone is motivated to do so.)
6149 * The changes in array handling break binary compatibility, so
6150 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6151 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6152 instead of (VALUES T T).
6153 * By following the instructions that Dan Barlow posted to sbcl-devel
6154 on 2 July 2000, I was able to enable primitive dynamic object
6155 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6156 functionality is not implemented (since it calls ld to resolve
6157 library references automatically, requiring RUN-PROGRAM for its
6158 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6159 try to resolve library references) is now supported.
6160 * The system now flushes the standard output streams when it terminates,
6161 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6162 them at several other probably-convenient times, e.g. in each pass of
6163 the toplevel read-eval-print loop, and after evaluating a form given
6164 as an "--eval" command-line option. (These changes were motivated by a
6165 discussion of stream flushing issues on cmucl-imp in August 2000.)
6166 * The source transform for TYPEP of array types no longer assumes
6167 that an array whose element type is a not-yet-defined type
6168 is implemented as an array of T, but instead punts, so that the
6169 type will be interpreted at runtime.
6170 * There is now some support for cross-compiling in make.sh: each of
6171 the phases of make.sh has its own script. (This should be transparent
6172 to people doing ordinary, non-cross-compile builds.)
6173 * Since my laptop doesn't have hundreds of megabytes of memory like
6174 my desktop machine, I became more motivated to do some items on
6175 my to-do list in order to reduce the size of the system a little:
6176 ** Arrange for various needed-only-at-cold-init things to be
6177 uninterned after cold init. To support this, those things have
6178 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6179 symbols with such names are now uninterned after cold init).
6180 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6181 fasl files for cold load.
6182 ** Remove the old compiler structure pooling code (which used to
6183 be conditional on the target feature :SB-ALLOC) completely.
6184 ** Redo the representation of some data in cold init to be more compact.
6185 (I also looked into supporting byte compiled code at bootstrap time,
6186 which would probably reduce the size of the system a lot, but that
6187 looked too complicated, so I punted for now.)
6188 * The maximum signal nesting depth in the src/runtime/ support code has
6189 been reduced from 4096 to 256. (I don't know any reason for the very
6190 large old value. If the new smaller value turns out to break something,
6191 I'll probably just bump it back up.)
6192 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6194 * Many, many bugs reported by Peter Van Eynde have been added to
6195 the BUGS list; some have even been fixed.
6196 * While enabling dynamic object file loading, I tried to make the
6197 code easier to understand, renaming various functions and variables
6198 with less ambiguous names, and changing some function calling
6199 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6200 * While trying to figure out how to do the OpenBSD port, I tried to
6201 clean up some of the code in src/runtime/. In particular, I dropped
6202 support for non-POSIX signal handling, added various comments,
6203 tweaked the code to reduce the number of compilation warnings, and
6204 renamed some files to increase consistency.
6205 * To support the new automatic configuration functionality in make.sh,
6206 the source file target-features.lisp-expr has been replaced with the
6207 source file base-target-features.lisp-expr and the machine-generated
6208 file local-target-features.lisp-expr.
6209 * fixed a stupid quoting error in make.sh so that using CMU CL
6210 "lisp -batch" as cross-compilation host works again
6212 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6214 * DESCRIBE no longer tries to call itself recursively to describe
6215 bound/fbound values, so that it no longer fails on symbols which are
6216 bound to themselves (like keywords, T, and NIL).
6217 * DESCRIBE now works on generic functions.
6218 * The printer now prints less-screwed-up representations of closures
6219 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6220 * A private symbol is used instead of the :EMPTY keyword previously
6221 used to mark empty slots in hash tables. Thus
6222 (DEFVAR *HT* (MAKE-HASH-TABLE))
6223 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6224 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6225 now does what ANSI says that it should. (You can still get
6226 similar noncompliant behavior if bang on the hash table
6227 implementation with all the symbols you get back from
6228 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6229 This breaks binary compatibility, since tests for equality to
6230 :EMPTY are wired into things like the macroexpansion of
6231 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6233 * There's now a minimal placeholder implementation for CL:STEP,
6234 as required by ANSI.
6235 * An obscure bug in the interaction of the normal compiler, the byte
6236 compiler, inlining, and structure predicates has been patched
6237 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6238 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6240 * Missing ordinary arguments in a macro call are now detected even
6241 when the macro lambda list contains &KEY or &REST.
6242 * The debugger no longer complains about encountering the top of the
6243 stack when you type "FRAME 0" to explicitly instruct it to go to
6244 the top of the stack. And it now prints the frame you request even
6245 if it's the current frame (instead of saying "You are here.").
6246 * As specified by ANSI, the system now always prints keywords
6247 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6249 * The default initial SIZE of HASH-TABLEs is now smaller.
6250 * Type information from CLOS class dispatch is now propagated
6251 into DEFMETHOD bodies, so that e.g.
6252 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6254 is now basically equivalent to
6255 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6256 (DECLARE (TYPE SINGLE-FLOAT X))
6258 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6259 operation, without having to do run-time type dispatch.
6260 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6261 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6262 * Since I don't seem to be making big file reorganizations very often
6263 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6264 is overflowing my ability to conveniently back them up), I've finally
6265 checked the system into CVS. (The CVS repository is on my home system,
6266 not at SourceForge -- putting it on SourceForge might come later.)
6267 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6268 high-level GC-NOTIFY-FOO functions send their output. (There's
6269 still very little control of where low-level verbose GC functions
6270 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6271 less than it used to -- the GC-NOTIFY-FOO functions are now under
6272 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6273 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6274 in only one place in the source code, and propagates it automatically
6275 everywhere that it's needed. Thus e.g. when I bump the version from
6276 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6277 * The C source files now include boilerplate legalese and documentation
6278 at the head of each file (just as the Lisp source files already did).
6279 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6280 to his page will be replaced with a link to his new CLiki service.
6282 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6284 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6285 * The build process now looks for GNU make under the default name "gmake",
6286 instead of "make" as it used to. If GNU make is not available as "gmake"
6287 on your system, you can change this default behavior by setting the
6288 GNUMAKE environment variable.
6289 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6290 can build without error under CMU CL.
6292 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6294 * There is now a partial SBCL user manual (with some new text and some
6295 text cribbed from the CMU CL manual).
6296 * The beginnings of a profiler have been added (starting with the
6297 CMU CL profiler and simplifying and cleaning up). Eventually the
6298 main interface should be through the TRACE macro, but for now,
6299 it's still accessed through vaguely CMU-CL-style functions and macros
6300 exported from the package SB-PROFILE.
6301 * Some problems left over from porting CMU CL to the new
6302 cross-compilation bootstrap process have been cleaned up:
6303 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6304 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6305 part when getting rid of the compiler *BACKEND* stuff.)
6306 ** The value of *NULL-TYPE* was screwed up, because it was
6307 being initialized before the type system knew the final
6308 definition of the 'NULL type. This screwed up several key
6309 optimizations in the compiler, causing inefficiency in all sorts
6310 of places. (I found it because I wanted to understand why
6311 GET-INTERNAL-RUN-TIME was consing.)
6312 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6313 PROCLAIM FTYPE information. Unfortunately this broke binary
6314 compatibility again, since now the forms output by DEFGENERIC
6315 to refer to functions which didn't exist in 0.6.3.
6316 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6317 can use the new (as of 0.6.3) transform for SOME into MAP into
6319 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6320 values to (INTEGER 0 1000000), so that the time code will no longer
6321 occasionally get blown up by Linux returning 1000000 microseconds
6322 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6323 its output conform to the ANSI spec. (Alas, this makes its output
6324 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6325 * A full call to MAP NIL with a single sequence argument no longer conses.
6326 * fixes to problems pointed out by Martin Atzmueller:
6327 * The manual page no longer talks about multiprocessing as though
6328 it were currently supported.
6329 * The ILISP support patches have been removed from the distribution,
6330 because as of version 5.10.1, ILISP now supports SBCL without us
6331 having to maintain patches.
6332 * added a modified version of Raymond Toy's recent CMU CL patch for
6333 EQUALP comparison of HASH-TABLE
6335 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6337 * The system still can't cross-compile itself with
6338 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6339 entails), but at least it can compile more of itself that way
6340 than it used to be able to, and various buglets which were uncovered
6341 by trying to cross-compile itself that way have now been fixed.
6342 * This release breaks binary compatibility again. This time
6343 at least I've incremented the FASL file format version to 2, so that the
6344 problem can be detected reliably instead of just causing weird errors.
6345 * various new style warnings:
6346 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6347 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6348 ** using the lexical binding of a variable named in the *FOO* style
6349 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6350 as specified by ANSI.
6351 * *RANDOM-STATE* is no longer automatically initialized from
6352 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6353 default behavior of the system is to repeat its behavior every time
6354 it's run. If you'd like to change this behavior, you can always
6355 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6356 old convention there was no comparably easy way to get the system to
6357 repeat its behavior every time it was run.
6358 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6359 FTYPE declarations has been removed, in favor of their ANSI
6360 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6361 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6362 the types of their sequence arguments can be determined at compile time.
6363 This is done through a new open code expansion for MAP which eliminates
6364 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6365 argument types can be determined at compile time.
6366 * The optimizer now transforms COERCE into an identity operation when it
6367 can prove that the coerced object is already of the correct type. (This
6368 can be a win for machine generated code, including the output of other
6369 optimization transforms, such as the MAP transform above.)
6370 * Credit information has been moved from source file headers into CREDITS.
6371 * Source file headers have been made more standard.
6372 * The CASE macro now compiles without complaining even when it has
6375 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6377 * (Note that the way that the PCL macroexpansions were rewritten
6378 to accommodate the change in DEFGENERIC below breaks binary
6379 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6380 not run under sbcl-0.6.2. Once we get out of alpha releases,
6381 i.e. hit release 1.0.0, we'll probably try to maintain binary
6382 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6383 and sbcl-1.4.4. Until then, however, it might be fairly common
6384 for maintenance releases to break binary compatibility.)
6385 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6387 * The reporting of unhandled signals has been changed to print some
6388 explanatory text as well as the report form. (Previously only
6389 the report form was printed.)
6390 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6391 it defines, so that the compiler no longer issues undefined function
6392 warnings for compiled-but-not-yet-loaded generic functions.
6393 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6394 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6395 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6396 section of the ANSI spec are supported.
6397 * The "" nickname for the "KEYWORD" package has been removed.
6398 The reader still handles symbol tokens which begin with a package marker
6399 as keywords, but it doesn't expose its mechanism for doing so in the
6400 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6401 * The system now issues STYLE-WARNINGs for contradictory TYPE
6402 proclamations. (Warnings for contradictory FTYPE proclamations would
6403 be nice too, but those can't be done usefully unless the type system
6404 is made smarter about FUNCTION types.)
6405 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6406 systematized, so that "*target-*.lisp is supposed to exist only on the
6407 target and imply that there's a related file which exists on the
6408 host, and *host-*.lisp is supposed to exist only on the host and imply
6409 that there's a related file which exists on the target. This involves a
6410 lot of renaming. Hopefully the acute confusion caused by the renaming
6411 will be justified by the reduction in chronic confusion..
6412 ** runtime-type.lisp -> early-target-type.lisp
6413 ** target-type.lisp -> late-target-type.lisp
6414 ** early-host-format.lisp -> early-format.lisp
6415 ** late-host-format.lisp -> late-format.lisp
6416 ** host-error.lisp -> misc-error.lisp
6417 ** early-error.lisp -> early-target-error.lisp
6418 ** late-error.lisp -> late-target-error.lisp
6419 ** host-defboot.lisp -> early-defboot.lisp
6420 ** code/misc.lisp -> code/target-misc.lisp
6421 ** code/host-misc.lisp -> code/misc.lisp
6422 ** code/numbers.lisp -> code/target-numbers.lisp
6423 ** code/early-numbers.lisp -> numbers.lisp
6424 ** early-host-type.lisp -> early-type.lisp
6425 ** late-host-type.lisp -> late-type.lisp
6426 ** host-typep.lisp -> typep.lisp
6427 ** load.lisp -> target-load.lisp
6428 ** host-load.lisp -> load.lisp
6429 ** host-disassem.lisp -> disassem.lisp
6430 ** host-insts.lisp -> insts.lisp
6431 ** byte-comp.lisp -> target-byte-comp.lisp
6432 ** host-byte-comp.lisp -> byte-comp.lisp
6433 ** host-signal.lisp -> signal.lisp
6434 ** host-defstruct.lisp -> defstruct.lisp
6435 ** late-target-type.lisp -> deftypes-for-target.lisp
6436 Furthermore, several other previously target-only files foo.lisp (e.g.
6437 hash-table.lisp and random.lisp) have been split into a target-and-host
6438 foo.lisp file and a target-only target-foo.lisp file, with their key type
6439 definitions in the target-and-host part, so that the cross-compiler will
6440 know more about target types.
6441 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6442 gone away. In their place are various *BACKEND-FOO* variables
6443 corresponding to the slots of the old structure.
6444 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6445 into the target SBCL has been fixed.
6446 * The chill.lisp system for loading cold code into a running SBCL
6448 * Support for the CMU CL "scavenger hook" extension has been removed.
6449 (It was undocumented and unused in the CMU CL sources that SBCL was
6450 derived from, and stale in sbcl-0.6.1.)
6451 * Various errors in the cross-compiler type system were detected
6452 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6453 (enabling various consistency checks). Many of them were fixed,
6454 but some hard problems remain, so the compiler is back to
6455 running without *TYPE-SYSTEM-INITIALIZED* for now.
6456 * As part of the cross-compiler type system cleanup, I implemented
6457 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6458 * I have started adding UNCROSS calls throughout the type system
6459 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6460 on cross-compiler input files will be able to go away, and various
6462 * CONSTANTP now returns true for quoted forms (as explicitly required
6465 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6467 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6468 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6469 (MAKE-LIST -1). In the longer term, it ought to become true
6470 that declarations are assertions even at SAFETY 1. For now, it's not
6471 quite true even at SAFETY 3, but it's at least more nearly true..
6472 (Note that this change seems to increases the size of the system by
6473 O(5%) and to decrease the speed of the compiler by 20% or more.)
6474 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6475 for the problem of printing dozens of lines of distracting information
6476 about low-level system machinery as part of the top stack frame
6477 on entry to the debugger when an undefined function was called.
6478 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6479 is not reset to COMMON-LISP-USER.
6480 * Compilation of stuff related to dyncount.lisp has been made conditional
6481 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6482 smaller. The various dyncount-related symbols have been moved into
6483 a new "SB-DYNCOUNT" package.
6484 * tty-inspect.lisp has been renamed to inspect.lisp.
6485 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6486 feature has gone away. (When we eventually port to other flavors of
6487 libc and/or Unix, we'll try to make the differences between flavors
6488 invisible at the user level.)
6489 * Various other *FEATURES* tags, and/or their associated conditionals,
6490 have been removed if obsolescent, or given better documentation, or
6491 sometimes given more-mnemonic names.
6493 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6495 * tidied up "make.sh" script
6496 * tidied up system directory structure
6497 * better "clean.sh" behavior
6498 * added doc/FOR-CMUCL-DEVELOPERS
6499 * many many small tweaks to output format, e.g. removing possibly-confusing
6500 trailing #\. character in DESCRIBE-INSTANCE
6501 * (EQUALP #\A 'A) no longer signals an error.
6502 * new hashing code, including EQUALP hashing
6503 * tidied up Lisp initialization and toplevel
6504 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6505 * command line argument processing
6506 * added POSIX-GETENV function to deal with Unix-ish environment variables
6507 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6508 terminating SBCL on EOF
6509 * non-verbose GC by default
6510 * There is no more "sbcl" shell script; the sbcl file is now the C
6511 runtime executable (just like CMU CL).
6512 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6514 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6515 symbol and package information as Lisp native symbol and package objects
6516 instead of strings naming symbols and strings naming packages. This way,
6517 whenever packages are renamed (as in warm init), debug information is
6518 transformed along with everything else.
6519 * tweaked the optimization policy declarations which control the building
6520 of SBCL itself. Now, among other things, the system no longer saves
6521 source location debugging information. (This helps two problems at once
6522 by reducing SBCL size and by keeping SBCL from trying to look for its
6523 sources -- which may not exist -- when reporting errors.)
6524 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6525 debugging and testing purposes
6526 * cleaned up printing, making the printer call PRINT-OBJECT for
6527 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6528 methods, giving nearly-ANSI behavior
6529 * converted almost all special variables to use *FOO* naming convention
6530 * deleted PARSE-TIME functionality, since it can be done portably
6531 * moved some files out of cold init into warm init
6532 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6534 * regularized formatting of source files
6535 * added an install.sh script
6536 * fixed ridiculous memory usage of cross-compiler by making
6537 compiler/alloc.lisp not try to do pooling unless it can hook
6538 itself into the GC of the cross-compilation host. Now the system
6539 builds nicely on my old laptop.
6540 * added :SB-ALLOC in target-features.lisp-expr
6541 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6542 was not implemented)
6543 * re-did condition handling and note reporting in the compiler. Notes
6544 are no longer handled by signalling conditions. Style warnings
6545 and warnings are handled more correctly and reported in such a way
6546 that it's easy to find one or the other in your output (so that you
6547 can e.g. figure out which of many problems caused COMPILE-FILE to
6549 * changed the severity of several compiler warnings from full WARNING
6550 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6551 compiler note reporting so that it doesn't use the condition system
6552 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6553 COMPILE-FILE command)
6554 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6555 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6556 no longer supported, since their implementation was deeply intertwingled
6557 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6558 * removed bogus "support" for compiler macros named (SETF FOO), and
6559 removed the compiler macro for SETF INFO (but only after making a fool
6560 of myself on the cmucl-imp mailing list by posting a bogus patch for
6561 DEFINE-COMPILER-MACRO..)
6562 * Compiled files containing forms which have side effects on the Lisp
6563 reader (such as DEFPACKAGE forms) are now handled more correctly.
6564 (Compiler queuing of top level lambdas has been suppressed by setting
6565 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6566 * deleted various currently-unused source files, e.g. gengc.lisp. They
6567 may be added back at some point e.g. when porting to other architectures,
6568 but until they are it's distracting to distribute them and to try to
6570 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6571 there were so many of them they're just distractions, and UNCROSS is
6572 known to be able to handle the current sources
6573 * moved PROFILE functionality into TRACE, so that it will be clear
6574 how the wrapping and unwrapping of functions when you profile them
6575 interacts with the wrapping and unwrapping of functions when you
6576 trace them. (Actually, the functionality isn't there yet, but at least
6577 the interface specification is there. Hopefully, the functionality will
6578 arrive with some future maintenance release.)
6579 * removed host-oops.lisp
6580 * changed signature of QUIT function to allow UNIX-CODE argument
6581 * fixed READ-SEQUENCE bug
6582 * tweaked verbose GC output so that it looks more like the progress
6583 output that ANSI specifies for functions like LOAD
6584 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6585 * added <http://sbcl.sourceforge.com> to the banner information printed by